corgi vs Cardigan

corgi and Cardigan both are nouns.

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

As nouns, Cardigan is a hyponym of corgi; that is, Cardigan 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
Cardigan: slightly bowlegged variety of corgi having rounded ears and a long tail

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

corgi (noun)	Cardigan (noun)
either of two Welsh breeds of long-bodied short-legged dogs with erect ears and a fox-like head	slightly bowlegged variety of corgi having rounded ears and a long tail