outcrop vs belay

outcrop and belay both are nouns.

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

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

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 outcrop include outthrust.

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

outcrop (verb)	belay (verb)
appear on the surface, come to the surface on the ground	fasten a boat to a bitt, pin, or cleat
	turn a rope round an object or person in order to secure it or him