Definition: come up (as of feelings and thoughts, or other ephemeral things)
Usage: Strong emotions welled up; Smoke swelled from it
Similar words: grow, arise, originate, spring up, develop, uprise, rise
Definition: come into existence; take on form or shape
Usage: A new religious movement originated in that country; a love that sprang up from friendship; the idea for the book grew out of a short story; An interesting phenomenon uprose