solder vs silver solder

solder and silver solder both are nouns.

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

As nouns, silver solder is a hyponym of solder; that is, silver solder is a word with a more specific, narrower meaning than solder:

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

Other hyponyms of solder include hard solder, soft solder.

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

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