line of latitude vs latitude

line of latitude and latitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
line of latitude	Yes	No	No	No
latitude	Yes	No	No	No

As nouns, line of latitude and latitude are synonyms defined as:

line of latitude and latitude: an imaginary line around the Earth parallel to the equator

Other synonyms of line of latitude include parallel, parallel of latitude.

line of latitude (noun)	latitude (noun)
an imaginary line around the Earth parallel to the equator	scope for freedom of e.g. action or thought; freedom from restriction
	the angular distance between an imaginary line around a heavenly body parallel to its equator and the equator itself
	an imaginary line around the Earth parallel to the equator
	freedom from normal restraints in conduct