JOIST
Joist, v. t. [imp. & p. p. Joisted; p. pr. & vb. n. Joisting.]

Defn: To fit or furnish with joists. Johnson.

JOKE
Joke, n. Etym: [L. jocus. Cf Jeopardy, Jocular, Juggler.]

1. Something said for the sake of exciting a laugh; something witty or sportive (commonly indicating more of hilarity or humor than jest); a jest; a witticism; as, to crack good-natured jokes. And gentle dullness ever loves a joke. Pope. Or witty joke our airy senses moves To pleasant laughter. Gay.

2. Something not said seriously, or not actually meant; something
done in sport.
Inclose whole downs in walls, 't is all a joke. Pope.
In joke, in jest; sportively; not meant seriously.
— Practical joke. See under Practical.

JOKE
Joke, v. t. [imp. & p. p. Joked; p. pr. & vb. n. Joking.]

Defn: To make merry with; to make jokes upon; to rally; to banter; as, to joke a comrade.

JOKE
Joke, v. i. Etym: [L. jocari.]

Defn: To do something for sport, or as a joke; to be merry in words
or actions; to jest.
He laughed, shouted, joked, and swore. Macaulay.

Syn.
— To jest; sport; rally; banter. See Jest.