"Ni baldaŭ tagmanĝos."

Translation: We will eat lunch soon.

[orthohawk]

In the midwestern USA, the meal in the middle of the day is very often called "dinner". For the people who use that term in that manner, vespermangxo is "supper".

[Luis_Domingos]

Using those cross-terms would be too confusing, so the course sticks with "breakfast-lunch-dinner". As you can see, there's no such issue in Esperanto, who uses the times of day to point out the respective meals.

[SariniLynn]

What is the difference between "nun" and "baldaŭ"?

[AdamShirey]

nun is "now"; baldaŭ is "soon"

[bobandnoo]

thank goodness, I'm starving!

[JennyDraper]

Could you use "tuj" here, or would it have a different meaning?

[NicolasDaL698501]

"Tuj" is "immediately", so it conveys closer proximity in time than "baldaŭ" (soon).