This is the 9433rd most frequent Japanese word.
積
"積" means "pile," "heap," "amount," or "volume," often indicating accumulation or quantity.
In this sentence, '積' (product) refers to the result of multiplication in mathematics.
彼は数学の積について考えている。
He is thinking about the product in mathematics.
Here, '積' (accumulate) is used in the context of building up or gathering efforts.
彼女は毎日努力を積み重ねている。
She accumulates effort every day.
In this case, '積' (accumulation) is related to the build-up of snow, forming layers or quantity.