impendent vs impending

impendent and impending both are adjectives.

Word	Noun	Adjective	Verb	Adverb
impendent	No	Yes	No	No
impending	No	Yes	No	No

As adjectives, impendent and impending are synonyms defined as:

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

impendent (adjective)	impending (adjective)
close in time; about to occur	close in time; about to occur