Tutoring English, homonyms are a curiosity. The tutor mentions another pair: leech and leach.

leech (n): a worm-like creature that sucks blood from its prey.

leach (v): to wash out, as nutrients from soil by over-watering.

Source:

Gilmour, Lorna (editor). Collins Essential Canadian English Dictionary and Thesaurus. Glasgow: HarperCollins, 2006.

Jack of Oracle Tutoring by Jack and Diane, Campbell River, BC.