1 to pair up

2 to match

3 to arrange in pairs

4 to add sth into a group

1 to join

2 to fit

3 to mate

4 to mix

5 to match

6 to deserve

7 to make up (a prescription)

8 to allocate

1 matching

2 fitting in with

3 compatible with

4 to correspond

5 to fit

6 to conform to

7 rapport

8 to coordinate with

9 to act in concert with

10 to cooperate

11 to become man and wife

12 to combine parts of machine

1 mating

2 copulation (esp. of animals)

1 to distribute

2 to assign

3 to allocate

4 to partition (a hard drive)