Accumulation (noun) اضافہ، بڑھاوا، ذخیرہ، انبار

the acquisition or gradual gathering of something.
Example: “the accumulation of wealth”
Impediment (noun) رخنہ ، رکاوٹ، لکنت

a hindrance or obstruction in doing something.
Example: “a serious impediment to scientific progress”