king orange vs tangor

king orange and tangor both are nouns.

Word	Noun	Adjective	Verb	Adverb
king orange	Yes	No	No	No
tangor	Yes	No	No	No

As nouns, king orange and tangor are synonyms defined as:

king orange and tangor: large citrus tree having large sweet deep orange fruit that is easily peeled; widely cultivated in Florida

Other synonyms of king orange include Citrus nobilis, temple orange, temple orange tree.

king orange (noun)	tangor (noun)
large citrus tree having large sweet deep orange fruit that is easily peeled; widely cultivated in Florida	large citrus tree having large sweet deep orange fruit that is easily peeled; widely cultivated in Florida