silver solder vs solder

silver solder and solder both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver solder	Yes	No	No	No
solder	Yes	No	Yes	No

As nouns, solder is a hypernym of silver solder; that is, solder is a word with a broader meaning than silver solder:

silver solder: a solder that contains silver
solder: an alloy (usually of lead and tin) used when melted to join two metal surfaces

silver solder (noun)	solder (noun)
a solder that contains silver	an alloy (usually of lead and tin) used when melted to join two metal surfaces

silver solder (verb)	solder (verb)
	join or fuse with solder