watch vs crystal

watch and crystal both are nouns.

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

watch (noun)	crystal (noun)
a purposeful surveillance to guard or observe	a protective cover that protects the face of a watch
the rite of staying awake for devotional purposes (especially on the eve of a religious festival)	glassware made of quartz
a small portable timepiece	a crystalline element used as a component in various electronic devices
a person employed to keep watch for some anticipated event	a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces
a period of time (4 or 2 hours) during which some of a ship's crew are on duty	a solid formed by the solidification of a chemical and having a highly regular atomic structure
the period during which someone (especially a guard) is on duty	colorless glass made of almost pure silica

watch (verb)	crystal (verb)
find out, learn, or determine with certainty, usually by making an inquiry or other effort
look attentively
be vigilant, be on the lookout or be careful
observe without intervening
observe or determine by looking
see or watch
follow with the eyes or the mind