orchard apple tree vs apple

orchard apple tree and apple both are nouns.

Word	Noun	Adjective	Verb	Adverb
orchard apple tree	Yes	No	No	No
apple	Yes	No	No	No

As nouns, orchard apple tree and apple are synonyms defined as:

orchard apple tree and apple: native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits

Other synonyms of orchard apple tree include Malus pumila.

orchard apple tree (noun)	apple (noun)
native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits	fruit with red or yellow or green skin and sweet to tart crisp whitish flesh
	native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits