Dawadungsa
Heaven which is level with the summit of Mount Meru, in which is the palace of Indra, and in which flourish the Kalpa trees (Th: Kamaphruk),
whose branches furnish everything that the angels can desire. See Dusit.

[Ref: The Wheel of the Law - Alabaster Henry (1871) - Trubner & Co, London - page 308.]
Deva, devata
(P., Skt.)
[thep, thewa, thewada (Th.)] : A heavenly being or angel inhabiting the six lower heavens of Buddhist cosmology, that is, heavens of sensual
pleasures (Chakamavacaradevaloka); frequently seen in Thai art in a worshipping posture.

[Ref: An outline of the History of Religious Architecture in Thailand - Sonthiwan Intralib (1991).]

Dewa angels: Th: Thewada; holding swords and lotuses. These, with the four adjoining similar  figures, represent the six heavens of the inferior or
sensual  angels. These six heavens bear the names: Chatumaharachit, Dawadungsa, Yama, Dusit, Nimanaradi and Paranimit wasawadi.

[Ref: The Wheel of the Law - Alabaster Henry (1871) - Trubner & Co, London - page 308.]
Dusit
The "joyful heaven," is the fourth Dewa heaven above the earth. The name is derived from the Sanskrit “Tush”, free translated “to be content”;
explained by the Thai as meaning, "that in which all desires are satisfied." It is the heaven in which the almost perfect beings, about to become
Buddhas, pass their last angelic life before being born on earth to assume the Buddha hood. In the Tushita heaven grows the Karaphruk-tree, which
produces as its fruit everything that can be desired by the angels - gold and silver, precious raiment, and jewels, and all that is beautiful and useful.

[Ref: The Wheel of the Law - Alabaster Henry (1871) - Trubner & Co, London - Page 177.]

Tushita, the joyful heaven, wherein Buddhas and others pass their last existence before being born on earth.  

[Ref: The Wheel of the Law - Alabaster Henry (1871) - Trubner & Co, London - page 308.]
Dvarapala
Dvarapala or the guardian of the temple normally appeared on the door panels of an ubosot, a wihan or a palace whether by carving, painting,
engraving or lacquering. The original images were fierce and powerful in order to scare away demons. They were also considered auspicious
beings with the power to bless worshippers. Dvarapala can be in the form of animals such as lion, naga, demons, devas or female heavenly beings,
or human holding weapons.
   
D