Difference between Null and Invalid

NULL vs INVALID: NOUN

Specifically, one of the bids in the game of skat. Same as misère. See skat.
Zero; nothing.
An instrument reading of zero.
The raised part in nulling or nulled work. This when small resembles a bead; when longer, a spindle.
Something that has no force or meaning; that which is of a negative or meaningless character; a cipher, literally or figuratively.
Specifically In musical notation, the character 0, denoting
In thorough-bass, that the bass note over which it is placed is to be played alone, the other parts resting;
In the fingering for stringed instruments, that the note over which it is placed is to be played on an open string.
That which has no value; a cipher; zero.
A zero method. See under Zero.
One of the beads in nulled work.
A non-existent or empty value or set of values.
Zero quantity of expressions; nothing.
A quantity of no importance
The attribute of an entity that has no valid value.
The ASCII or Unicode character (␀), represented by a zero value, that indicates no character and is sometimes used as a string terminator.

Someone who is incapacitated by a chronic illness or injury
Any person with a disability.
One who is confined to home or bed because of illness, disability or injury
An infirm or sickly person; one who is affected by disease or disabled by any infirmity.
Hence Something that is damaged, or the worse for wear, but not so much as to be wholly unserviceable.
A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health who is unable to care for himself.

Of the null set
Absent or non-existent
Insignificant
Of or comprising a value of precisely zero
Having no validity, "null and void"
Unassigned or meaningless; -- a special value given to variables, especially pointers or logical variables, indicating that it is meaningless and cannot be used in computation. The actual value that is stored in memory to indicate the null condition may vary with the computer language used.
Empty; having no members.
Having a value of zero.
Causing a complete loss of gene function, amorphic.
Of no legal or binding force or validity; of no efficacy; invalid; void; nugatory; useless.
Having no legal force; invalid.
Of no consequence, effect, or value; insignificant.
Amounting to nothing; absent or nonexistent.
Of or relating to a set having no members or to zero magnitude.
Lacking any legal or binding force

In math. logic, noting a propositional function when it is false for all values of x.
Zero in algebraic measure.
To kink: said of a whalemen's line as it runs from the line-tub.
To form nulls, or into nulls, as in a lathe. See nulling.
To annul; deprive of validity; destroy; nullify.
A quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential
Not any; wanting; non-existent.
Void; of no legal or binding force or validity; of no efficacy; invalid.
Of no account or significance; having no character or expression; negative.

Not valid; of no force, weight, or cogency; weak.
In law, having no validity or binding force; wanting efficacy; null; void: as, an invalid contract or agreement.
Deficient in health; infirm; weak; sick.
To affect with disease; render an invalid: chiefly in the past participle.
To cause one's self to be registered as an invalid.
To register as an invalid; enroll on the list of invalids in the military or naval service; give leave of absence from duty on account of ill health.

Lame, Nil, False, Zilch, Absent, Hopeless, Inconsequential, Nulla, Nullify, Useless, Worthless, Nullity, Void, Nugatory, Invalid

Disable, Sophistic, Sophistical, False, Spurious, Void, Uncollectible, Specious, Fallacious, Nugatory, Expired, Unsound, Nullified, Invalidated, Null

Lame, Nil, False, Zilch, Absent, Hopeless, Inconsequential, Nulla, Nullify, Useless, Worthless, Nullity, Void, Nugatory, Invalid

Disable, Sophistic, Sophistical, False, Spurious, Void, Uncollectible, Specious, Fallacious, Nugatory, Expired, Unsound, Nullified, Invalidated, Null

If a string is null, then this function returns null.
If x and y is null, returns null.
NOT NULL returns NULL because nulls are indeterminate.
Check whether value is null or not null.
Has null null received a contact lens exam?
If this array is NULL, cstat must be NULL.
If all values are null, then null is returned.
Append anything to NULL and the result is NULL.
The IS NULL operator returns the Boolean value TRUE if its operand is null, or FALSE if it is not null.
Multiple null values are allowed, since the null value is never equal to anything, even another null value.

Agreement is unenforceable or invalid shall not render any other provision of this Agreement unenforceable or invalid.
Use the Ignore Fields with Invalid Types property to replace data of invalid data types with default values.
Short error: Invalid Task Attribute Map Id or Invalid Task Attribute Value.
If any part of the regulations promulgated is declared invalid, all parts that are severable from the invalid parts shall remain in effect.
Once a thirdparty buys without actual knowledge of the invalid lien, that transaction will not be undone notwithstanding the invalid lien.
Directory does not automatically clean up invalid objects, but invalid objects and attributes appear in searches and can be deactivated manually.
Invalid Arrest Warrant: a criminal case WILL NOT be dismissed on the basis of an invalid arrest warrant.
Error Message: Invalid Warehouse or Warehouse Not Available You have entered an invalid warehouse.
If you enter an invalid path or name, a message appears indicating that the output MSI file name is invalid.
Will is invalid if the condition imposed is invalid or contrary to law.