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Language Research - Words
mass · noun C /mæs/Full view
a mass of sth
B2 a large number or amount of something
Dictionary examples:

He always has a mass of books and papers on his desk.

The forest is a mass of color in autumn.

The baby had masses of blond curls.

Learner example:

But people are bewildered because of [a] mass of information. (First Certificate in English; B2; Turkish)

mass · adjective always before noun /mæs/
mass media
B2 the newspapers, magazines, television, and radio that reach large numbers of people
Dictionary example:

We depend on mass media for current news and information.

Learner example:

I am thinking here particularly of the fact that every event and action is wildly discussed in the mass media. (First Certificate in English; B2; Russian)

mass
C1 having an effect on or involving a large number of people
Dictionary examples:

They hope the new movie will appeal to a mass audience.

weapons of mass destruction

Opposition groups plan to stage mass demonstrations all over the country.

Learner example:

Television was a major step forward in the media world which combined the best of all the major mechanisms of mass communication. (International English Language Testing System; C1; Tamil)

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