How did Dickens expand the English language?

Among the 9,218 quotations from {Dickens’}works in the OED, 265 words and compounds are cited as having been first used by him in print and another 1,586 as having been used in a new sense.
What! Don’t you know what a sawbones is, sir?’ inquired Mr. Weller. ‘I thought everybody know’d as a sawbones was a surgeon.’ Charles Dickens, The Pickwick Papers, 1837
She was constantly complaining of the cold, and of its occasioning a visitation in her back which she called ‘the creeps’. — Charles Dickens, The Pickwick Papers, 1837 
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