What Is Their Main Difference?
Differences
'To long' is a verb that means wanting to do something, while, 'too long' is a phrase that means something is excessively lengthy. Look at the examples below:
Most people tend
This movie is
Similarities
They share no similarities.
Are They Interchangeable?
We cannot use them interchangeably because these terms have different meanings and grammatical functions. Compare:
✓ The show was
X The show was