bulldozer vs dozer

bulldozer and dozer both are nouns.

Word	Noun	Adjective	Verb	Adverb
bulldozer	Yes	No	No	No
dozer	Yes	No	No	No

As nouns, bulldozer and dozer are synonyms defined as:

bulldozer and dozer: large powerful tractor; a large blade in front flattens areas of ground

bulldozer (noun)	dozer (noun)
large powerful tractor; a large blade in front flattens areas of ground	large powerful tractor; a large blade in front flattens areas of ground