a. colour: red, blue, yellow, green and many more.
For example:
i. I have a pencil (noun).
ii. It is a red (adjective) pencil.
b. shape: round, square, oval and many more.
i. This is a table (noun).
ii. It is a round (adjective) table.
c. size: big, small, long, short and many more.
i. This is my house (noun).
ii. It is a big (adjective) house.
Assess yourself by staged practices