hot: having heat in it at the moment, as bread just out of the oven or clothing warmed by the air
This is the plain, everyday word for something that has heat in it right now. It describes ordinary objects a person can touch: the bread in a traveler's bag, the clothes on a person's back. It never describes a fire or a flame, and unlike some words from the same root it never shifts over to anger or passion.
In both places it occurs, the warmth makes a point about something else. In Joshua 9:12 the men of Gibeon say their bread was still warm when they packed it and is now dry and crumbling, which is their proof of a long journey they never actually made. In Job 37:17 Elihu asks Job whether he understands how his own clothes turn warm when the land lies still under the south wind. The warmth is evidence in each case: of time passed in the first, of weather no person controls in the second.
The word sits in a large family built on the idea of heat. Beside it stand the noun for heat itself (חֹם), the verb for growing warm (חָמַם), the poetic name for the sun (חַמָּה), and, at the far end of the range, the word for boiling anger (חֵמָה). Only that last one has left physical temperature behind. This adjective stays literal everywhere it is used.