robot bomb vs buzz bomb

robot bomb and buzz bomb both are nouns.

Word	Noun	Adjective	Verb	Adverb
robot bomb	Yes	No	No	No
buzz bomb	Yes	No	No	No

As nouns, robot bomb and buzz bomb are synonyms defined as:

robot bomb and buzz bomb: a small jet-propelled winged missile that carries a bomb

Other synonyms of robot bomb include doodlebug, flying bomb, V-1.

robot bomb (noun)	buzz bomb (noun)
a small jet-propelled winged missile that carries a bomb	a small jet-propelled winged missile that carries a bomb