ir means ur going for example yo voy a ir a la escula
ser means to be for example Ser is used to link two pronouns or a noun and a pronoun. Both nouns or pronouns may appear in the sentence o merely be understood. ... If it is an adjective, you can use either ser or estar, depending on what the meaning of the adjective in the sentence is or which meaning you would like the adjective to have in this specific sentence. Most adjectives can be used with both verbs, but resulting in different meanings.
