urobilin vs animal pigment

urobilin and animal pigment both are nouns.

Word	Noun	Adjective	Verb	Adverb
urobilin	Yes	No	No	No
animal pigment	Yes	No	No	No

As nouns, animal pigment is a hypernym of urobilin; that is, animal pigment is a word with a broader meaning than urobilin:

urobilin: brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine
animal pigment: pigment occurring in animals

urobilin (noun)	animal pigment (noun)
brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine	pigment occurring in animals