field spaniel vs spaniel

field spaniel and spaniel both are nouns.

Word	Noun	Adjective	Verb	Adverb
field spaniel	Yes	No	No	No
spaniel	Yes	No	No	No

As nouns, spaniel is a hypernym of field spaniel; that is, spaniel is a word with a broader meaning than field spaniel:

field spaniel: large usually black hunting and retrieving spaniel with a dense flat or slightly wavy coat; cross between cocker and Sussex spaniel
spaniel: any of several breeds of small to medium-sized gun dogs with a long silky coat and long frilled ears

field spaniel (noun)	spaniel (noun)
large usually black hunting and retrieving spaniel with a dense flat or slightly wavy coat; cross between cocker and Sussex spaniel	any of several breeds of small to medium-sized gun dogs with a long silky coat and long frilled ears