Dic: middle ground (common ground)

• She seems to have found a middle ground in which mutual support, rather than complete dependency, is possible.
• Negotiations have failed to establish any middle ground.
• The ballet company now occupies the middle ground between classical ballet and modern dance.
• The UN peace envoy has failed to find any middle ground between the government and the opposition parties.
• He can be magical, he can be comical, but only rarely does he occupy the middle ground.

COBUILD:
The middle ground between two groups, ideas, or plans involves things which do not belong to either of these groups, ideas, or plans but have elements of each, often in a less extreme form.

OALD:

1. a set of opinions, decisions, etc. that two or more groups who oppose each other can agree on.
2. position that is not extreme.

CALD:
a position between two opposite opinions in an argument, or between two descriptions:

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CF. common ground:

COBUILD: If two people or groups find common ground, they agree about something, especially when they do not agree about other things.

OALD: opinions, interests and aims that you share with somebody, although you may not agree with them about other things

• Despite our disagreements, we have been able to find some common ground.