This is the 2919th most frequent Polish word.
myśl
"Thought" or "idea."
In this sentence, 'myśl' is used as a noun meaning 'thought' or 'idea', representing a concept or contemplation.
Mam myśl, żeby odwiedzić muzeum.
I have a thought to visit the museum.
Here, 'myśli' is the plural form of 'myśl', still a noun, meaning 'thoughts', symbolizing one's mental deliberations.
Nie mogę się skupić, bo moje myśli uciekają.
I can't focus because my thoughts wander.
In this case, 'myślę' is a verb form derived from 'myśleć', meaning 'I think', showing the action of contemplating or considering something.