What can you catch but never throw?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A sundial has the fewest moving parts of any timepiece. Which has the most?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

What does this rebus riddle means ?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

What does this mathematical rebus means ?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?