pestle vs bray

pestle and bray both are nouns.

Word	Noun	Adjective	Verb	Adverb
pestle	Yes	No	Yes	No
bray	Yes	No	Yes	No

As verbs, bray is a hypernym of pestle; that is, bray is a word with a broader meaning than pestle:

Other hypernyms of pestle include comminute, crunch, grind, mash.

pestle (noun)	bray (noun)
a club-shaped hand tool for grinding and mixing substances in a mortar	the cry of an ass
a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone
machine consisting of a heavy bar that moves vertically for pounding or crushing ores

pestle (verb)	bray (verb)
grind, mash or pulverize in a mortar	laugh loudly and harshly
	reduce to small pieces or particles by pounding or abrading
	braying characteristic of donkeys