固有
こゆう · koyuu · JLPT N1 · na-adj
characteristic
固有 = 固 firm/fixed + 有 have: what a thing firmly has as its own
固 means firm or fixed, and 有 means to have. Something 固有 is fixed to a thing as its own trait, such as a tradition or peculiarity that it always keeps.
有 — hand 𠂇 + moon/meat 月
Originally depicted a hand holding a piece of meat (月 here is the 'meat' radical, not moon), expressing the idea of possessing something. Over time the meaning broadened from 'to hold/possess' to the general sense of 'to have' or 'there is/exists'.