N to n
The 'barrier' group
These nouns refer to things that prevent or limit something, or make it difficult for someone to do something.
Reducing the barriers to trade and free movement within the EU has been its greatest single driver of economic growth, job creation and productivity.
My busy over-educated brain is a positive hindrance to prayer.
Limit and limitation are often used with there.
There is a limit to the amount of money that can go into the health service.
With most of these nouns, the preposition to is sometimes followed by an '-ing' clause.
bar barrier burden disincentive hindrance impediment limit limitation obstacle stumbling block
The main obstacle to reforming the economy is managers' and employees' lack of interest in the results of their labor.