Can someone break down a song for me with terminologies?

I am trying to learn the basics of song writing but I'm confused about the differences between vamps and licks, etc. I read an article that said Pachelbel's Canon in D is an example of ostinato (riff) but I don't know which part is the riff! Can someone dissect a popular song for me with lyrics and list which parts is the vamp, lick, riff, hook, etc. I know the basics like verse, chorus and bridge. Thank you so much for any help :)