alcove vs cubicle

alcove and cubicle both are nouns.

Word	Noun	Adjective	Verb	Adverb
alcove	Yes	No	No	No
cubicle	Yes	No	No	No

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

Other hyponyms of alcove include carrel, carrell, stall.

alcove (noun)	cubicle (noun)
a small recess opening off a larger room	small area set off by walls for special use
	small individual study area in a library
	small room in which a monk or nun lives