This is the 350th most frequent Romanian word.
ușor
Easy; light.
Here, 'ușor' functions as an adjective meaning 'easy' to describe the problem.
Această problemă este ușor de rezolvat.
This problem is easy to solve.
In this sentence, 'ușor' is used as an adverb meaning 'gently'.
Trebuie să deschizi sertarul mai ușor.
You need to open the drawer more gently.
Here, 'ușor' serves as an adverb characterizing the manner of walking as 'lightly'.