atrazine vs weedkiller

atrazine and weedkiller both are nouns.

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

As nouns, weedkiller is a hypernym of atrazine; that is, weedkiller is a word with a broader meaning than atrazine:

atrazine: a synthetic compound derived from triazine that is widely used as an agricultural herbicide
weedkiller: a chemical agent that destroys plants or inhibits their growth

Other hypernyms of atrazine include herbicide, weed killer.

atrazine (noun)	weedkiller (noun)
a synthetic compound derived from triazine that is widely used as an agricultural herbicide	a chemical agent that destroys plants or inhibits their growth