Bug-out- bag among list of new words [closed]

They are "hyphenated compound words." (grammarly)

When two words are used together to yield a new meaning, a compound is formed. Compound words can be written in three ways: as open compounds (spelled as two words, e.g., ice cream), closed compounds (joined to form a single word, e.g., doorknob), or hyphenated compounds (two words joined by a hyphen, e.g., long-term). Sometimes, more than two words can form a compound (e.g., mother-in-law).

See also:
Hyphen (Oxford)

Hyphens are used in many compound words to show that the component words have a combined meaning (e.g. a pick-me-up, mother-in-law, good-hearted) or that there is a relationship between the words that make up the compound: for example, rock-forming minerals are minerals that form rocks. But you don’t need to use them in every type of compound word.

and, the very definition of "word", on Collins:

1. b. a letter or group of letters representing such a unit of language, written or printed usually in solid or hyphenated form