words vs throwaway

words and throwaway both are nouns.

Word	Noun	Adjective	Verb	Adverb
words	Yes	No	No	No
throwaway	Yes	Yes	No	No

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

Other hyponyms of words include aside, cue, monologue, soliloquy.

words (noun)	throwaway (noun)
words making up the dialogue of a play	an advertisement (usually printed on a page or in a leaflet) intended for wide distribution
an angry dispute	words spoken in a casual way with conscious under-emphasis
the text of a popular song or musical-comedy number	(sometimes offensive) a homeless boy who has been abandoned and roams the streets
the words that are spoken
language that is spoken or written

words (adjective)	throwaway (adjective)
	intended to be thrown away after use
	thrown away