As nouns,
falcon-gentil is a hyponym of
Falco peregrinus; that is, falcon-gentil is a
word with a more specific, narrower meaning than
Falco peregrinus:
Falco peregrinus: a widely distributed falcon formerly used in falconry
falcon-gentil: female falcon especially a female peregrine falcon
Other hyponyms of Falco peregrinus include
falcon-gentle.