tener
Tener is a core Spanish verb meaning “to have.” It is used to express possession, physical attributes, and various states, and it also serves as the basis for many common expressions and constructions. Etymologically, tener comes from the Latin tenēre, related to other Romance verbs such as tenir/tenir in French and tenere in Italian.
In present tense usage, tener is irregular in the yo form but otherwise follows a regular stem
Tener participates in several common constructions. Tener que + infinitive expresses obligation (tengo que estudiar). Tener ganas