bo's'n vs bos'n

bo's'n and bos'n both are nouns.

Word	Noun	Adjective	Verb	Adverb
bo's'n	Yes	No	No	No
bos'n	Yes	No	No	No

As nouns, bo's'n and bos'n are synonyms defined as:

bo's'n and bos'n: a petty officer on a merchant ship who controls the work of other seamen

Other synonyms of bo's'n include bo'sun, boatswain, bosun.

bo's'n (noun)	bos'n (noun)
a petty officer on a merchant ship who controls the work of other seamen	a petty officer on a merchant ship who controls the work of other seamen