Watch the uncountable nouns.
Content
Although you can say:
The contents of the book
the s
here is not indicating plural, therefore you cannot use:
Edit two contents
You must rather use:
Edit two content items
Code
You cannot say:
Will we modify the codes directly?
Software source code is always written in singular:
Will we modify the code directly?
Stuff
You cannot say:
A lot of stuffs
Instead, say:
A lot of stuff
Bread
You cannot say:
Two breads
Instead, say:
Two loafs of bread
People
Three peoples
means that there are three large ethnic/tribal groups of people. Normally, you just want to say:
Three persons
Logic
You cannot say:
Lots of logics
Instead use:
A lot of logic
or
complex logic
or
much logic