Question

In winter why does an iron pillar feel colder than a wooden pole

Answer 1

Because wood slows down transferring of thermal energy
The thermal conductivity, and thermal capacity of iron is a lot higher than for wood. So when you touch wood, a little heat from your finger warms the wood just at that place and isn't conducted away. But for iron, it's as though your finger is trying to heat the whole piece, the heat conducts away rapidly and your finger then keeps trying to supply more until it is as cold as the iron. So the iron feels colder - just because it doesn't warm under your finger like the wood

Answer 2

iron is a metal and metal is a good absorbent of cool and heat energy so it is cooler and wood is a non metal so it does absorbs heat