This is the 3188th most frequent French word.
religion
The belief in and worship of a divine or supernatural power, system of faith, or cultural practices often centered around spirituality.
In this sentence, 'religion' is used as a general concept referring to the belief system and practices of various groups.
La religion joue un rôle important dans de nombreuses cultures.
Religion plays an important role in many cultures.
Here, 'religions' is in plural form, referring to the various religious traditions and systems that exist.
Il étudie l'histoire des religions à l'université.
He studies the history of religions at the university.
In this context, 'religion' is presented as a personal experience and influence that provides emotional support.