Less
Definition 1 of 4
Pro Tip 1/2
Quantifiable Reduction
Use 'less' when indicating a decrease in amount or degree of something that's not counted individually. There is less noise in the suburbs.
Pro Tip 2/2
Non-Countable Items
'Less' is typically correct with singular nouns or non-countable nouns like milk, money, and happiness. She has less enthusiasm than before.