occurs
v.v. to happen or take place. You use this to describe when an event or a specific situation starts to exist.
v. to happen or take place; to exist or be found in a particular place or situation. Intransitive — does not take a direct object.
The meeting occurs every Monday morning.
The most significant growth in the plant occurs during the rainy season when water is plentiful.
While the chemical reaction occurs naturally in the upper atmosphere, replicating the same results in a laboratory setting requires precise temperature controls.
The verb is intransitive and cannot be used in the passive voice. When used with a person as the subject, it often takes 'to' (e.g., 'it occurs to me').
The accident was occurred yesterdayThe accident occurred yesterdayOccur is an intransitive verb and cannot be used in the passive voice.