problem

As nouns the difference between affair and problem

is that affair is that which is done or is to be done; matter; concern; business of any kind, commercial, professional, or public; — often in the plural while problem is problem.

As nouns the difference between taxonomy and problem

is that taxonomy is the science or the technique used to make a classification while problem is problem.

As nouns the difference between problem and mistake

is that problem is a difficulty that has to be resolved or dealt with while mistake is an error; a blunder.

As an adjective problem

is difficult to train or guide; unruly.

As a verb mistake is

to understand wrongly, taking one thing for another, or someone for someone else.

As nouns the difference between problem and query

is that problem is problem while query is a question or inquiry.

As a verb query is

to ask, inquire.

As nouns the difference between problem and abstraction

is that problem is problem while abstraction is the act of abstracting, separating, withdrawing, or taking away; withdrawal; the state of being taken away .

As nouns the difference between issues and problem

is that issues is plural of lang=en while problem is a difficulty that has to be resolved or dealt with.

As a verb issues

is third-person singular of issue.

As an adjective problem is

difficult to train or guide; unruly.

As a verb challenges

is .

As a noun problem is

problem.

As nouns the difference between problem and selfmate

is that problem is problem while selfmate is (chess) a chess problem in which the white player, moving first, must force the black player to deliver checkmate within a specified number of moves.