What basic concept would rocks think about / bother discussing?

I am in the middle of writing a story, and currently attempting to invent a language for the gods and elemental of the earth. But what would rocks even talk about? I’ve been trying to create a list of basic concepts that rocks think about enough to bother expressing in speech, and this is what I’ve come up with so far:

sand/gravel
light/dark
depth/height
mamga as liquid rock?
types (igneous/sediment/metamorphosis)
the act of being motionless vs. being in motion
types of movement (i.e. physical rolling vs. tectonics)
erosion

Can you think of any other concepts that rocks would worry about that I haven’t? Do you know of any existing literature that I might muse over. Even if it’s just an opinion, feedback is appreciated!