strake vs plank

strake and plank both are nouns.

Word	Noun	Adjective	Verb	Adverb
strake	Yes	No	No	No
plank	Yes	No	Yes	No

As nouns, plank is a hypernym of strake; that is, plank is a word with a broader meaning than strake:

strake: thick plank forming a ridge along the side of a wooden ship
plank: a stout length of sawn timber; made in a wide variety of sizes and used for many purposes

Other hypernyms of strake include board.

strake (noun)	plank (noun)
thick plank forming a ridge along the side of a wooden ship	an endorsed policy in the platform of a political party
	a stout length of sawn timber; made in a wide variety of sizes and used for many purposes

strake (verb)	plank (verb)
	cook and serve on a plank
	cover with planks
	set (something or oneself) down with or as if with a noise