We express ourselves through excess. We also survive on excess. What we do with things that are surplus to requirements says a lot about how we live.
Excess is a bunch of things. Not just any bunch, though not far off either.
Excess can be words, but it’s more often gestures. All that energy thrown off by the sun. A more efficient star would recycle that energy. Perhaps that what black holes are: no excess. But nature hardly work that way. It prefers to send energy everywhere, where it does things in other ways, for other purposes.
Fruit is by nature excess. All those berries. Any one of which could be a new bush. Most of which goes to feed other creatures, us included.
A stalk of grass grows as per its own requirements, then dies, becoming excess, and gives over to some other process and purpose.