Yes, both ‘is’ and ‘am’ are proper grammar, but they serve different purposes in English.
‘Is’ is the third person singular form of the verb ‘to be’. It is used with singular subjects, such as ‘he’, ‘she’, or ‘it’. For example, you might say, ‘She is going to the store.’
On the other hand, ‘am’ is the first person singular form of the same verb. It is used exclusively with the subject ‘I’. An example would be, ‘I am learning how to code.’
In summary, while both words are grammatical, their use depends on the subject of the sentence. Understanding when to use ‘is’ or ‘am’ is vital for constructing correct sentences in English.