In a class at a Spring festival a few years back, I remember the leader talking about devas as another word for "angel." However, in other spiritualities, they have been spoken about as more of a nature spirit or elemental.
"There seems to be a cooperative partnership between devas and human beings which has attracted attention in this time of increasing ecological consciousness. This partnership was discovered at Findhorn in Scotland and Perelandra in Washington, DC. It seems that devas are the "architects" of nature. A deva is assigned to every living thing, even the soil. They are the blueprint designers for all living things, and control all necessary energies for growth and health. At the two above mentioned facilities, it is said devas dispense information on planting, fertilizing, watering, and general plant care." (paragraph found here)
The word "deva" comes from the Sanskrit language, meaning "radiant" or "shining" and indicates a being of light.
In Hinduism, devas are considered gods. They are celestial beings that control forces of nature such as fire, air and water.
Devas are also found in Buddhism. Their belief (found here) states:
Buddhist devas are not immortal. They live for very long but finite periods of time.
Buddhist devas are not incarnations of a few archetypal deities or manifestations of an all-embracing pantheistic One. Nor are they merely symbols. They are considered to be, like humans, distinct individuals with their own personalities and paths in life.
Buddhist devas are not omnipotent. Their powers tend to be limited to their own worlds, and they rarely intervene in human affairs. When they do, it is generally by way of quiet advice rather than by physical intervention.
Buddhist devas are not morally perfect. Some of them are capable of ignorance, arrogance and pride. The devas of the lower worlds experience the same kind of passions that humans do, including (in the lowest of these worlds), lust, jealousy, and anger.
With all the information about what a deva may or may not be, and the differing opinions (Zoroastrians believe they are 'wrong gods' or 'false gods',) I'd be interested to know what you think of these beings!