corgi vs Pembroke

corgi and Pembroke both are nouns.

Word	Noun	Adjective	Verb	Adverb
corgi	Yes	No	No	No
Pembroke	Yes	No	No	No

As nouns, Pembroke is a hyponym of corgi; that is, Pembroke is a word with a more specific, narrower meaning than corgi:

corgi: either of two Welsh breeds of long-bodied short-legged dogs with erect ears and a fox-like head
Pembroke: the smaller and straight-legged variety of corgi having pointed ears and a short tail

Other hyponyms of corgi include Pembroke Welsh corgi, Cardigan, Cardigan Welsh corgi.

corgi (noun)	Pembroke (noun)
either of two Welsh breeds of long-bodied short-legged dogs with erect ears and a fox-like head	the smaller and straight-legged variety of corgi having pointed ears and a short tail