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.
of
Preposition
—
Made using.
It is a house of cards.
authority
Noun
—
To have authority means to have the power to make a decision.
This judge has the authority to throw you in jail.
—
If you are an authority on something, many people think you know very, very much about it.
The Pope is the highest authority in the Catholic church.