thermobaric bomb vs fuel-air bomb

thermobaric bomb and fuel-air bomb both are nouns.

Word	Noun	Adjective	Verb	Adverb
thermobaric bomb	Yes	No	No	No
fuel-air bomb	Yes	No	No	No

As nouns, thermobaric bomb and fuel-air bomb are synonyms defined as:

thermobaric bomb and fuel-air bomb: a bomb that uses a fuel-air explosive

Other synonyms of thermobaric bomb include aerosol bomb, vacuum bomb, volume-detonation bomb.

thermobaric bomb (noun)	fuel-air bomb (noun)
a bomb that uses a fuel-air explosive	a bomb that uses a fuel-air explosive