Ma'anar ƙamus na kalmar "homology" shine yanayin samun alaƙa iri ɗaya ko makamancin haka, matsayi na dangi, ko tsari. A cikin ilmin halitta, homology yana nufin kamanceceniya a cikin tsari tsakanin halittu daban-daban wanda ya samo asali ne daga asalin juyin halitta. Misali, fuka-fukan tsuntsaye da jemagu suna da irin wannan tsari, duk da cewa sun samo asali ne da kansu, domin suna da kakanni daya masu fikafikai. A cikin ilimin lissafi, homology yana nufin reshe na algebraic topology wanda ke nazarin kaddarorin wuraren da aka adana a ƙarƙashin ci gaba da sauye-sauye, kamar mikewa ko lankwasa.