Englishfor English speakers
assumption
Noun
—
An assumption is a guess or belief about something without having enough information to know if it is true. In maths or science: something assumed to be true in order to build an argument or calculation.
You shouldn't make the assumption that guns are only a problem in big cities.
To calculate the age of a rock we make the assumption that the rate of radioactive decay is constant.
agreement
Noun
—
An agreement is where everybody has the same feelings about something; when everyone has the same ideas; saying "yes".
We have an agreement with our teacher. If we do our homework we can go home early.