different between groundbreaking vs overwhelmingly

English

From ground +? breaking, in reference to the practice of breaking ground at the beginning of a new building or construction.

groundbreaking (comparative more groundbreaking, superlative most groundbreaking)

Innovative; new, different; doing something that has never been done before.
The latest model includes several groundbreaking features and improvements.

groundbreaking (plural groundbreakings)

overwhelming +? -ly

overwhelmingly (comparative more overwhelmingly, superlative most overwhelmingly)

In an overwhelming manner; very greatly or intensely.
Mostly; predominantly; almost completely.
- 2012, Arthur Gillard, Homelessness (page 38)
  Studies on homeless income find that the typical “career panhandler” who dedicates his time overwhelmingly to begging can make between $600 and $1,500 a month.

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