In contemporary metaphysical discussions the word "emergence" and its variants play a big part. It often appears in the context of the mind-body problem. The mind (or intentionality, or consciousness, or whatever you may call the intangible subjective aspect of our reality) is said to have "emerged" at a certain moment in evolution, and to recapitulate this by "emerging" again at a certain moment in embryology. I think there is an element of word magic involved. We lessen the mystery of something by having a good word for it. IIRC, Samuel Alexander built an impressive metaphysical structure around this word magic. Matter, he said, emerged from space, then life from matter, then mind from life, like a growing ziggurat. I bring this up because I came across an intriguing discussion of the ambiguity of the word in my recent web surfing. Here is a link. It turns out that was written a year ago but, hey, that's an eyeblink for the chronology of ...