at hand vs imminent

at hand and imminent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
at hand	No	Yes	No	No
imminent	No	Yes	No	No

As adjectives, at hand and imminent are synonyms defined as:

Other synonyms of at hand include close at hand, impendent, impending.

at hand (adjective)	imminent (adjective)
close in time; about to occur	close in time; about to occur
close in space; within reach