The difference between Abnegation and Denial

When used as nouns, abnegation means a denial, whereas denial means the negation in logic.

check bellow for the other definitions of Abnegation and Denial

Abnegation as a noun:

A denial; a renunciation; denial of desire or self-interest.

Denial as a noun (logic):

The negation in logic.

Examples:

"The denial of "There might be X" is the null, "False, there is no X."
Denial as a noun:

A refusal to comply with a request.

Examples:

"Every time we asked for an interview we got a denial."
Denial as a noun:

An assertion of untruth.

Examples:

"The singer has issued a sweeping denial of all the rumors."
Denial as a noun:

Refusal to believe a problem exists

Examples:

"We couldn't break through his denial about being alcoholic."
Denial as a noun (dated, psychology):

A defense mechanism involving a refusal to accept the truth of a phenomenon or prospect.

Examples:

"He is in denial that he has a drinking problem."