Moonbeam vs. Moonlight — What's the Difference?

A ray of moonlight.

Moonlight consists of mostly sunlight (with little earthlight) reflected from the parts of the Moon's surface where the Sun's light strikes.

A shaft of moonlight.

The light reflected from the surface of the moon.

Moonlight generally.

To work at another job, often at night, in addition to one's full-time job.

Any of various Australasian lycaenid butterflies of the genus Philiris.

The light reflected from the Moon.

(definition needed)

To work on the side (at a secondary job), often in the evening or during the night.

A ray of light from the moon.

(by extension) To engage in an activity other than what one is known for.

A ray of moonlight

To carry out undeclared work.

The light of the moon.

To work at a second job in addition to one's main occupation; - often done at night.

The light of the moon;

Work a second job, usually after hours;