Here are some examples:
* She is training for a marathon. (present continuous tense)
* They trained hard for the competition. (past tense)
* I will be training the new employees. (future tense)
It can also be a noun, meaning the process of being trained or the act of teaching someone.
* The company provides training for new employees. (noun)
* The training was rigorous but effective. (noun)
So, the word "training" can be both a verb and a noun, depending on how it is used in a sentence.