rock outcrop vs belay

rock outcrop and belay both are nouns.

Word	Noun	Adjective	Verb	Adverb
rock outcrop	Yes	No	No	No
belay	Yes	No	Yes	No

As nouns, belay is a hyponym of rock outcrop; that is, belay is a word with a more specific, narrower meaning than rock outcrop:

rock outcrop: the part of a rock formation that appears above the surface of the surrounding land
belay: something to which a mountain climber's rope can be secured

Other hyponyms of rock outcrop include outthrust.

rock outcrop (noun)	belay (noun)
the part of a rock formation that appears above the surface of the surrounding land	something to which a mountain climber's rope can be secured

rock outcrop (verb)	belay (verb)
	fasten a boat to a bitt, pin, or cleat
	turn a rope round an object or person in order to secure it or him