Difference between Inability and Failed

INABILITY vs FAILED: NOUN

Lack of the ability to do something; incapability
The quality or state of being unable; lack of ability; lack of sufficient power, strength, resources, or capacity.
Specifically In theology, want of power to obey the law of God.
The state of being unable, physically, mentally, or morally; want of ability; lack of power, capacity, or means: as, inability to perform a task, or to pay one's debts.
Lack of ability or means.
Lack of ability (especially mental ability) to do something
Lacking the power to perform

Absence, Incapacity, Unavailability, Ineptitude, Inadequacy, Ineffectiveness, Lack, Failed, Incapability, Refusal, Failing, Ability, Failure, Unwillingness, Unfitness

Fizzled, Faltered, Thwarted, Botched, Foundered, Managed, Lacked, Bungled, Did, Inability, Refused, Attempted, Failure, Unable, Unsuccessful

Powerlessness, Inefficiency, Shortcoming, Incompetence, Absence, Unavailability, Ineptitude, Inadequacy, Lack, Failed, Refusal, Failing, Ability, Failure, Unwillingness

Missed, Aborted, Rejected, Fizzled, Faltered, Thwarted, Botched, Foundered, Managed, Bungled, Inability, Attempted, Failure, Unable, Unsuccessful

Inability to have an erection suitable for intercourse.
Stuttering, inability to articulate consonants and vowel sounds.
Bosses and towers are immune to inability effects.
However, I feel this inability is only temporary.
Unrealistic expectation or the inability to implent policy?
Dory with an inability to develop declarative memory.
Inability to see the funny side of things.
Inability to carry out any activity without discomfort.
They cover everything from our inability to travel to our inability to seek psychological assistance, for example.
Accordingly, the attachment system is more undermined by inability to depend on and fit in with others than on inability to gain autonomy.

Funds check or reservation was attempted, but failed.
Before bankruptcy, the debtor failed to pay rent.
If my mission president thinks that I have failed than my home stake president and bishop will think that I failed.
The defendants negligently failed to diagnose a placental abruption and failed to recognize the existence of a bleeding condition known as DIC.
Respondent failed to update name and address; failed to notify Secretary of State of criminal charges and conviction.
Current Employer____________________ Have you ever failed a nursing course or failed nursing at another college or nursing school?
Failed to reconfirm at least one drug and failed to reconfirm the adulterant.
God spoke concerning you has failed; all have been fulfilled for you, not one of them has failed.
Either failed to read, or failed to write.
Failed attempts should be logged, unless such action results in the display of the failed password.