Random Puzzles 

Workings

Hints
Try: dish + golf, tray + sign, raft + hiss.

Answers
dish + golf = goldfish
tray + sign = stingray
raft + hiss = starfish
cram + leek = mackerel
ears + shoe = seahorse
loud + fern = flounder

Workings

Hint
This is a well known nursery rhyme.

Answer
AJCTA.

These are the initial letters from the nursery rhyme 'Jack and Jill went up the hill'. The letters represent 'and Jill came tumbling after'.

Workings

Hint
These are all islands.

Answer
Baffin Island.

From the largest islands in the world, in descending order.

Australia is considered the smallest continent, and Greenland the largest island.

Workings

Hint
Some are much more common than others.

Answers
Common: vacuum, vacuumed, vacuuming, vacuums.

Less common: continuum, continuums, muumuu, muumuus.

Much less common: carduus, carduuses, continuua, duumvir, duumviral, duumvirate, duumvirates, duumviri, duumvirs, individuum, individuums, lituus, lituuses, menstruum, menstruums, mutuum, mutuums, paramenstruum, paramenstruums, residuum, residuums, squush, squushed, squushes, squushier, squushiest, squushing, squushy, triduum, triduums, ultravacuum, ultravacuums, weltanschauung, weltanschauungen, weltanschauungs.