watch glass vs protection

watch glass and protection both are nouns.

Word	Noun	Adjective	Verb	Adverb
watch glass	Yes	No	No	No
protection	Yes	No	No	No

As nouns, protection is a hypernym of watch glass; that is, protection is a word with a broader meaning than watch glass:

Other hypernyms of watch glass include protective cover, protective covering.

watch glass (noun)	protection (noun)
a protective cover that protects the face of a watch	the activity of protecting someone or something
laboratory glassware; a shallow glass dish used as an evaporating surface or to cover a beaker	payment extorted by gangsters on threat of violence
	kindly endorsement and guidance
	the imposition of duties or quotas on imports in order to protect domestic industry against foreign competition
	a covering that is intend to protect from damage or injury
	defense against financial failure; financial independence
	the condition of being protected