It's 'Paranormal Activity'.
The plural of activity is activities.
The correct spelling for the activity is commentating(descriptive analysis of an ongoing activity).
ABSTINENCE : refraining from an activity ; avoidance.
Pulural of activity? =activities
Baflamaia ( not 100% how to spell it)
The spelling is operation (activity, or surgery).
Responsibility : accepting consequences for an action or activity.