Welsh corgi vs Pembroke

Welsh corgi and Pembroke both are nouns.

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

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

Welsh 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 Welsh corgi include Pembroke Welsh corgi, Cardigan, Cardigan Welsh corgi.

Welsh 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