The plant produces a (great/large/huge) 'mass of' blossoms every spring. = The plant produces 'masses of' blossoms every spring.
The mayor is trying to encourage more commuters to use 'mass transit' in order to alleviate traffic in the city.
His policies are supported by 'the' (great/broad) 'mass of' the people. [=by most of the people]
(..) The point is Untrained shooters, nine out of ten times, They go for the head. This guy, he went center mass. Which means we're looking for a professional. Dr. Saroyan, i have something of note i'd like to show you. Just a second. (..)2016 TvShow: Bones Title: The Secret in the Service Season: 11 Episode 17