pear tree vs pear

pear tree and pear both are nouns.

Word	Noun	Adjective	Verb	Adverb
pear tree	Yes	No	No	No
pear	Yes	No	No	No

As nouns, pear tree and pear are synonyms defined as:

pear tree and pear: Old World tree having sweet gritty-textured juicy fruit; widely cultivated in many varieties

Other synonyms of pear tree include Pyrus communis.

pear tree (noun)	pear (noun)
Old World tree having sweet gritty-textured juicy fruit; widely cultivated in many varieties	sweet juicy gritty-textured fruit available in many varieties
	Old World tree having sweet gritty-textured juicy fruit; widely cultivated in many varieties