to exploit; to make use of; to use; to take advantage of; to utilize
利 · 7 strokes
Depicts harvesting grain (禾) with a blade (刂). Harvest was the main source of profit in agricultural societies.
用 · 5 strokes
Depicts a bucket with a handle on the right side. Based on the original meaning "bucket". The meaning of this character has shifted over time and now means "use".