How do you determine if terms are like terms? Be specific I need a quick specific explanation of what a like term is please no links thank you :)

Like terms have to have the same variables and the variables have to have the same powers.

3x and 6x are like terms.
3x and 6y are not.

4y^2 and 7y^2 are like terms.
4y^3 and 7y^6 are not.

2xy and 5xy are like terms.
2xy^2 and 5x^2y are not
2xy^2 and 5xy are not.