(m) means that a noun is masculine. French nouns have a gender, which is either feminine (like la dame or la lune) or masculine (like l'homme or le soleil).
(M)
I think Declan's phone number ends with a two.Je pense que le numéro de téléphone de Declan se termine par un deux.
A pronoun is a word that stands in for a noun (e.g., elle, lui).
