watch crystal vs watch

watch crystal and watch both are nouns.

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

watch crystal (noun)	watch (noun)
a protective cover that protects the face of a watch	a purposeful surveillance to guard or observe
	the rite of staying awake for devotional purposes (especially on the eve of a religious festival)
	a small portable timepiece
	a person employed to keep watch for some anticipated event
	a period of time (4 or 2 hours) during which some of a ship's crew are on duty
	the period during which someone (especially a guard) is on duty

watch crystal (verb)	watch (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