The quality of being important or significant, especially in a practical or tangible way.
Materialness is about things that are real and have a big effect on our lives.
Examples:
The materialness of the decision cannot be overstated.
The materialness of the problem is clear to everyone.
She doesn't understand the materialness of the situation.
The materialness of the cake is very important to me.
The materialness of the discovery changed the world.
The materialness of the mistake was huge.