Can you guess whats the word based on the pictures you see?

The goal of this puzzle game is to find the feature the four pictures have in common and write it underneath it to unlock the level and win coins.
Coins are useful to buy hints, and can be gained by either waiting or solving levels. This game is highly addictive, be warned! It seems easy at first but before you know it you are showing it to people asking them to help you out!
Will you be up to it? Can you unlock them all?
Hundreds of levels, hours of fun.

...AND MOST IMPORTANTLY, WHAT'S THE WORD? ;)
- HUNDREDS OF LEVELS (MODE CLASSIC/FOOD AND COUNTRIES)
- UNLIMITED SKIPS! CAN'T FIND IT? GO TO NEXT LEVEL !
- SUITS ALL AGE GROUP, CHILDREN AND GRANDPARENTS INCLUDED !