MISSING LINK XCII

Each trio of words below shares a Missing Link - that is, its members have something in common, obvious or not. For example, RIVERS, NOSES, & VIOLINS can all have BRIDGES.

1. Pot..........Chuck..........Knot
2. House..........Tag..........Years
3. Outs..........Mend..........Whole (with "the")
4. Subject..........Deep end..........Rack (with "the")
5. Fin..........Back.........Bone
6. Ring..........Hole..........Pad
7. Board..........Nature..........Goose
8. Shoes..........Music..........Shaft
9. Union..........Flap..........Cracker
10. Suit..........Seat..........Ball

Answers:

1. Kinds of holes
2. Dog
3. Things you can be on
4. Things that can be off
5. Tail
6. Key
7. Mother
8. Elevator
9. Jack
10. Jump