This is the 399th most frequent Czech word.
snížení
Reduction.
Here, "snížení" is used as a noun to denote a decrease or reduction in something, specifically revenues.
Nastalo snížení našich tržeb kvůli ekonomické krizi.
There was a reduction in our revenues due to the economic crisis.
In this sentence, "snížení" refers to the reduction of speed, emphasizing a specific action.
Snížení rychlosti na silnici je nutné dodržovat.
The reduction of speed on the road must be adhered to.
Here, "snížení" is associated with reducing emissions, indicating a targeted goal or plan.