tension
US /ˈten.ʃən/
UK /ˈten.ʃən/

1.
2.
mental or emotional strain
:
•
There was a lot of tension in the room before the announcement.
•
He felt the tension building up in his shoulders.
3.
a relationship between people or groups that is difficult or unfriendly
:
•
There's a lot of tension between the two rival teams.
•
The political tension in the region is escalating.