[aurays]

Hi everyone,

I'm looking at the distinction between countable and uncountable nouns. The difference I came across is that countable nouns can have an indefinite article. Are there any other differences?

I noticed that there can be some nouns that are uncountable, but that can take an indefinite article.
Like for example: A willingness to act

I don't really understand these cases. Could someone explain it?

Thanks in advance for your help!