Agreeing

Question 1

Agree

Answer 1

Share somebody’s view/concerns/fear or etc.
Subscribe to a view or theory or etc.
Be of the same opinion
Concur
Somebody is right/somebody makes a valid point

Question 2

Partly agree

Answer 2

Agree up to a point
Broadly agree
There is some truth in

Question 3

When a group of people agree

Answer 3

Agreement
Consensus
Common ground
Unanimous on
Widely held view/beliefs/myth or etc
Widely/generally Accepted