"He did not believe her words."
Translation:Il n'a pas cru ses paroles.
Paroles (fem) are used to mean lyrics.
Paroles is a plural used to express the idea of speech (a flow of words as units).
In singular, it has to do with promise/honor: you have my word = tu as ma parole
Some expressions use one or the other: "les paroles/les mots s'envolent, les écrits restent".
The French possessives "son, sa, ses" are adjectives. As adjectives, they agree in gender and number with the noun they modify:
- son fils = his/her son - masculine singular adjective + noun
- sa fille = his/her daughter - feminine singular adjective + noun
- ses enfants = his/her children - plural adjective + noun