The difference between Arise and Occur

When used as verbs, arise means to come up from a lower to a higher position, whereas occur means to happen or take place.

check bellow for the other definitions of Arise and Occur

Arise as a verb:

To come up from a lower to a higher position.

Examples:

"to arise from a kneeling posture"
Arise as a verb:

To come up from one's bed or place of repose; to get up.

Examples:

"He arose early in the morning."
Arise as a verb:

To spring up; to come into action, being, or notice; to become operative, sensible, or visible; to begin to act a part; to present itself.

Examples:

"A cloud arose and covered the sun."

Occur as a verb (intransitive):

To happen or take place.

Examples:

"The liftoff will occur in exactly twelve seconds."
Occur as a verb (intransitive):

To present or offer itself.

Examples:

"I will write if the opportunity occurs."
Occur as a verb (impersonal):

To come or be presented to the mind; to suggest itself.
Occur as a verb (intransitive, sciences):

To be present or found.

Examples:

"The chemical monofluoroacetate occurs in all parts of ''Dichapetalum cymosum'', and is responsible for its toxic effects."