bos'n vs bo's'n

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

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

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

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

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

bos'n (noun)	bo's'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