This is the 690th most frequent French word.
civils
"Non-military individuals; civilians."
In this sentence, 'civils' is used as a noun referring to non-military individuals, highlighting its usage in contrast to military personnel.
Les civils ont été évacués lors de l'incident.
The civilians were evacuated during the incident.
Here, 'civiles' is used as an adjective qualifying 'infrastructures', denoting that these are related to civilian, non-military domains.
Les infrastructures civiles doivent être protégées.
Civilian infrastructures must be protected.
In this example, 'civile' is an adjective describing 'situation,' indicating the context pertains to civil or non-military conditions.