abaft vs aft

abaft is not an adjective while aft is an adjective.

Word	Noun	Adjective	Verb	Adverb
abaft	No	No	No	Yes
aft	No	Yes	No	Yes

As adverbs, abaft and aft are synonyms defined as:

abaft and aft: at or near or toward the stern of a ship or tail of an airplane

Other synonyms of abaft include astern.

abaft (adjective)	aft (adjective)
	(nautical, aeronautical) situated at or toward the stern or tail

abaft (adverb)	aft (adverb)
at or near or toward the stern of a ship or tail of an airplane	at or near or toward the stern of a ship or tail of an airplane