- fold, fold up, turn up - bend or lay so that one part covers the other; "fold up the newspaper"; "turn up your collar"
--1 is one way to change surface
Sample sentence:
They fold up the sheets
- fold, fold up - become folded or folded up; "The bed folds in a jiffy"
--2 is one way to change
Sample sentences:
The sheets didn't fold up
These fabrics fold up easily