Missing Link?

[grumpyman]

Looking for the missing link word:
i.e Gold, Pond, Finger =FISH (GoldFISH, FISH Finger, FISHpond.

Question (1): FARM, FOOD, GOOD
Question (2): APPARATUS, HEAVY, SPACE
Question (3): DIES, OVER, DOWN

65 in total have got all of the others.

Thanks in advance.

Frank

[factor-fiction]

2 breathing

[scorpiojo]

1 Health

[quinie]

3 Come? Come-dies,over-come,come-down

[boxtops]

Nice one, quinie!

[tballrossi]

3 Bear

[grumpyman]

I think that it's a shame that you can only give one best answer, as the three of you (factor-fiction + scorpiojo and quinie) all deserve it, but as I have struggled with question 3 the most I think that it must go to quinie.
I am afraid that i can't follow the reasoning given by tballrossi (Bear)

Thank you all .lol