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]
(..) Um... me? Okay. I'm a sagittarius, which probably tells you way more than you need to know. Yes. It tells us that you participate in the mass cultural delusion that the sun's apparent position relative to arbitrarily defined constellations at the time of your birth somehow affects your personality. (..)2007 TvShow: The Big Bang Theory Title: Pilot Season: 1 Episode 1