botany (a scientific study of plants)

七七日: the forty-ninth day after a person dies; the Buddhist memorial service that occurs forty-nine days after a person dies

乳: milk; breast; latex (milky substance in plants) / 父: one's own father; a father figure; the Christian God / 致知: the pursuit of knowledge; / 遅遅, 遅々: slowness, tardiness; a long day

乳, 父: a surname / 父子: a place name

遅遅, 遅々: to be late

日日: day by day

日日: every day, daily

(onomatopoeia, slang) sexy

Jesus

(by extension) Christianity and Christians as a whole; Christendom