patois vs dyke

patois and dyke both are nouns.

Word	Noun	Adjective	Verb	Adverb
patois	Yes	No	No	No
dyke	Yes	No	Yes	No

patois (noun)	dyke (noun)
a regional dialect of a language (especially French); usually considered substandard	a barrier constructed to contain the flow of water or to keep out the sea
a characteristic language of a particular group (as among thieves)	(slang) offensive term for a lesbian who is noticeably masculine

patois (verb)	dyke (verb)
	enclose with a dike