watch chain vs watch guard

watch chain and watch guard both are nouns.

Word	Noun	Adjective	Verb	Adverb
watch chain	Yes	No	No	No
watch guard	Yes	No	No	No

As nouns, watch chain and watch guard are synonyms defined as:

watch chain and watch guard: short chain or ribbon attaching a pocket watch to a man's vest

Other synonyms of watch chain include fob.

watch chain (noun)	watch guard (noun)
short chain or ribbon attaching a pocket watch to a man's vest	short chain or ribbon attaching a pocket watch to a man's vest