This is the 317th most frequent Ukrainian word.
хоча
"Хоча" means "although" or "though" in English.
In this sentence, «хоча» introduces a concession that contrasts with the second clause.
Хоча він був зайнятий, він допоміг нам.
Although he was busy, he helped us.
Here, «хоча» adds a statement that might challenge the instruction to stay.
Залишайся тут, хоча можлива злива.
Stay here, though a storm is possible.
«Хоча» here expresses an unexpected situation with relation to the outcome.