Locks & Lox

Locks – chambers for raising and lowering ships to different levels of a waterway. Or devices used to secure a storage container. (Notice these are plural nouns. But "locks" is also a present tense verb form for using a lock.)

Lox – brined salmon. (Notice this is a singular noun, and I don't believe it has a plural form. Lox can be measured in plural amounts or pieces or varieties, etc. But as far as I can tell you can't have "loxes." I could be wrong here, of course.)

As in, "The captain locks the lox in a box using locks, until the ship is through the locks." A perfectly logical sentence.
By the way, I would have posted this earlier in the day, honestly, but I started drawing and then was like, "oh my god I have to go buy some bagels and lox right now." #soimpressionable

Also, please note I didn't include the word "lochs," because although it's fairly common in certain English usage (well, pretty much "Loch Ness monster" and nothing else), the word isn't actually English. So I didn't include it. Anyway, it's Gaelic for "lake."