I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

How is a fly different from a mosquito?

Solve the following series:
AZ, GT, MN, __, YB

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

Can you quickly find which two matchstick figures are identical?

Can you spot the man between the coffee bean in the picture below ?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?