This is the 1481st most frequent Russian word.
намного
"Much" or "by far" (used to indicate a significant degree or extent).
The word 'намного' is used as an adverb to emphasize the degree of the comparison (much more spacious).
Этот дом намного просторнее.
This house is much more spacious.
'Намного' here is used to highlight the significant extent of comparison in speed.
Он работает намного быстрее других.
He works much faster than others.
In this situation, 'намного' functions to indicate a substantial difference in difficulty.