Great Song Debate: "Big Yellow Taxi" vs "(Nothing But) Flowers"

We have lost a sense of semantics in our music. We categorize things by genre. Pandora, etc connects music by musical style rather than the substance of the song. I love associating songs by meaning. Here's a little example: 

"Paved paradise, put up a parking lot"


"Once there were parking lots, now it's a peaceful oasis"