watch guard vs watch chain

watch guard and watch chain both are nouns.

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

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

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

Other synonyms of watch guard include fob.

watch guard (noun)	watch chain (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