steerer vs coxswain

steerer and coxswain both are nouns.

Word	Noun	Adjective	Verb	Adverb
steerer	Yes	No	No	No
coxswain	Yes	No	No	No

As nouns, coxswain is a hyponym of steerer; that is, coxswain is a word with a more specific, narrower meaning than steerer:

Other hyponyms of steerer include cox.

steerer (noun)	coxswain (noun)
a beguiler who leads someone into danger (usually as part of a plot)	the helmsman of a ship's boat or a racing crew
the person who steers a ship