Ethnical comes from Late Latin ethnicus 'heathen', from Ancient Greek ethnikos 'national, of a people', from ethnos 'nation, people', with the adjectival suffix -al. The development is chiefly a borrowing or learned continuation, carrying an older form and meaning into English rather than building the word from a purely native base. In present use, it is used as an adjective meaning "of or relating to ethnic groups or races; ethnic", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes derivatives such as ethnically and related forms such as ethnic, ethnicity, and ethnos, showing how the same historical material continues to organize neighboring vocabulary. The named historical forms include Ancient Greek ethnikos and Ancient Greek ethnos, keeping the history tied to concrete forms rather than a loose resemblance. Its semantic neighborhood includes ethnic, racial, tribal, and cultural, locating the modern specialization without adding a new origin story.