weedkiller vs silvex

weedkiller and silvex both are nouns.

Word	Noun	Adjective	Verb	Adverb
weedkiller	Yes	No	No	No
silvex	Yes	No	No	No

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

weedkiller: a chemical agent that destroys plants or inhibits their growth
silvex: a herbicide that is effective in controlling woody plants but is toxic to animals

Other hyponyms of weedkiller include Agent Orange, atrazine, linuron, paraquat, simazine, maleic hydrazide.

weedkiller (noun)	silvex (noun)
a chemical agent that destroys plants or inhibits their growth	a herbicide that is effective in controlling woody plants but is toxic to animals