Stady the words in the look box and answer the questions . see grammar support 15 . 1 which words are short and which are long: big / old / famous / popular? 2 when do you use-est,whith short or with long words ? 3 when do you use most? 4 what do all these forms have in common?

1.The short words are big and old,long words are famous and popular.

2. I can see -est with short words

3.I use most with long words

4.These forms are comparative and superlative degrees of adjectives. 

1) big, old - are short, famous popular  - are long

2)with short :  biggest oldest

3)most famous, most popular

4) all of them mean the  highest degree of comparison