crystal vs stone

crystal and stone both are nouns.

Word	Noun	Adjective	Verb	Adverb
crystal	Yes	No	No	No
stone	Yes	Yes	Yes	No

As nouns, stone is a hypernym of crystal; that is, stone is a word with a broader meaning than crystal:

crystal: a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
stone: a lump or mass of hard consolidated mineral matter

Other hypernyms of crystal include rock.

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

crystal: a solid formed by the solidification of a chemical and having a highly regular atomic structure
stone: a crystalline rock that can be cut and polished for jewelry

crystal (noun)	stone (noun)
a protective cover that protects the face of a watch	building material consisting of a piece of rock hewn in a definite shape for a special purpose
glassware made of quartz	a lack of feeling or expression or movement
a crystalline element used as a component in various electronic devices	a lump or mass of hard consolidated mineral matter
a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces	the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed
a solid formed by the solidification of a chemical and having a highly regular atomic structure	an avoirdupois unit used to measure the weight of a human body; equal to 14 pounds
colorless glass made of almost pure silica	material consisting of the aggregate of minerals like those making up the Earth's crust
	a crystalline rock that can be cut and polished for jewelry

crystal (adjective)	stone (adjective)
	of any of various dull tannish or grey colors

crystal (verb)	stone (verb)
	remove the pits from
	kill by throwing stones at