spot-weld vs weld

spot-weld and weld both are nouns.

Word	Noun	Adjective	Verb	Adverb
spot-weld	Yes	No	Yes	No
weld	Yes	No	Yes	No

As nouns, weld is a hypernym of spot-weld; that is, weld is a word with a broader meaning than spot-weld:

spot-weld: each of the welds made by welding at a separate point
weld: a metal joint formed by softening with heat and fusing or hammering together

As verbs, weld is a hypernym of spot-weld; that is, weld is a word with a broader meaning than spot-weld:

spot-weld (noun)	weld (noun)
each of the welds made by welding at a separate point	a metal joint formed by softening with heat and fusing or hammering together
	European mignonette cultivated as a source of yellow dye; naturalized in North America

spot-weld (verb)	weld (verb)
make circular welds	unite closely or intimately
	join together by heating