bo'sun vs bosun

bo'sun and bosun both are nouns.

Word	Noun	Adjective	Verb	Adverb
bo'sun	Yes	No	No	No
bosun	Yes	No	No	No

As nouns, bo'sun and bosun are synonyms defined as:

bo'sun and bosun: a petty officer on a merchant ship who controls the work of other seamen

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

bo'sun (noun)	bosun (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