This is the 4969th most frequent French word.
sourit
"Sourit" means "smiles."
'Sourit' is used as a verb again to describe the act of smiling that causes a positive emotion.
Quand elle sourit, tout le monde se sent heureux.
When she smiles, everyone feels happy.
In this sentence, 'sourit' is used as a verb showing the action of smiling.
Elle sourit toujours quand elle regarde des films comiques.
She always smiles when she watches funny movies.
Here, 'sourire' (related to 'sourit') is used as a noun to refer to the physical expression of joy or friendliness.