This is the 1753rd most frequent Chinese word.
恐惧
Fear; terror.
The word '恐惧' is used as a noun here, meaning 'fear' and referring to a specific phobia someone has.
她对黑暗的恐惧让她不愿意独自在夜晚外出。
Her fear of the dark prevents her from going out alone at night.
Here, '恐惧' is again a noun, expressing the internal feeling of fear present within someone's mind.
我希望克服内心的恐惧，勇敢面对生活的挑战。
I hope to overcome the fear inside me and bravely face life's challenges.
In this sentence, '恐惧' is used as an emotional reaction to an immediate and threatening situation.