throw away vs jettison

throw away and jettison both are verbs.

Word	Noun	Adjective	Verb	Adverb
throw away	No	No	Yes	No
jettison	No	No	Yes	No

As verbs, jettison is a hyponym of throw away; that is, jettison is a word with a more specific, narrower meaning than throw away:

throw away (verb)	jettison (verb)
to remove	throw as from an airplane
throw or cast away	throw away, of something encumbering