affinity vs biological science

affinity and biological science both are nouns.

Word	Noun	Adjective	Verb	Adverb
affinity	Yes	No	No	No
biological science	Yes	No	No	No

affinity (noun)	biological science (noun)
inherent resemblance between persons or things	the science that studies living organisms
a natural attraction or feeling of kinship
the force attracting atoms to each other and binding them together in a molecule
(immunology) the attraction between an antigen and an antibody
(anthropology) kinship by marriage or adoption; not a blood relationship
(biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts
a close connection marked by community of interests or similarity in nature or character