へだhedaてるteru
1.

To place something between two entities, thereby hindering direct interaction or communication between them.

2.

To create a barrier, whether physical, temporal, or emotional, that keeps two things apart from each other.

3.

To impose a distance, either by time or space, that prevents or delays reunification or connection between two parties.

Example:

アイルランドとイギリスは海によって隔てられている。