Difference between Invalid and Valid

INVALID vs VALID: NOUN

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

Still legally acceptable
Well grounded in logic or truth or having legal force
An argument whose conclusion is always true whenever its premises are true.
A formula or system that evaluates to true regardless of the input values.
Related to the current topic, or presented within context, relevant.
Acceptable, proper or correct.
Well grounded or justifiable, pertinent.
Having legal strength or force; executed with the proper formalities; incapable of being rightfully overthrown or set aside.
Of sound health; robust.
Correctly inferred or deduced from a premise.
Containing premises from which the conclusion may logically be derived.
Having legal force; effective or binding.
Producing the desired results; efficacious.
Well grounded; just.
Having sufficient strength or force; founded in truth; capable of being justified, defended, or supported; not weak or defective; sound; good; efficacious.

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 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.
To cause one's self to be registered as an invalid.

In chem., having valence: chiefly used in composition, as in univalid for univalent, etc.
In logic, having, as an argument, that degree of formal strength and truth that it professes to have.
Good or sufficient in point of law; efficacious; executed with the proper formalities; incapable of being rightfully overthrown or set aside; sustainable and effective in law, as distinguished from that which exists or took place in fact or appearance, but has not the requisites to entitle it to be. recognized and enforced by law: as, a, valid deed; a valid covenant; a valid instrument of any kind; a valid claim or title; a valid marriage; a valid ordination.—4. In zoology and hot., having sufficient classificatory strength or force; scientifically founded or well-grounded; securely established: as, a valid family, genus, or species; & valid classification.
Sufficiently supported by fact; well-grounded; sound; just; good: capable of being justified or defended; not weak or defective: as, a valid reason; a valid objection.
Strong: powerful; efficient.

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

Relevant, Enforceable, Justifiable, Lawful, Tenable, Invalid, Well grounded, Sound, Legal, Binding, Reasoned, Unexpired, Logical, Validated, Legitimate

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

Relevant, Enforceable, Justifiable, Lawful, Tenable, Invalid, Well grounded, Sound, Legal, Binding, Reasoned, Unexpired, Logical, Validated, Legitimate

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.

Please check that it is a valid photo.
Promo code is valid for new users only.
Valid on successful recharges and bill payments only.
The offer is valid for all prime users.
The South African identity document is not valid as a travel document or valid for use outside South Africa.
This coverage must be valid at the time of application and throughout the year when the permit is valid.
Consistency ensures that a transaction can only bring the database from one valid state to another valid state.
Everywhere else, every car that has a valid registration needs valid insurance.
Offer is valid upon payment made using a valid FGB Credit Card.
Bring with you a VALID driver license, VALID vehicle insurance and VALID vehicle registration.