且つ
かつ · katsu · JLPT N1 · conjunction
and
且 — pictograph of an ancestral tablet or stacked offerings
且 originally depicted an ancestral spirit tablet or a stand holding ritual offerings, and it served as the early form of 祖 (ancestor). Over time it was borrowed to write the unrelated grammatical word meaning 'moreover' or 'and also,' so a new character 祖 was created for the original sense.