| a slight wind (usually refreshing) | air; breeze; gentle wind; zephyr; |
| a cooling breeze from the sea (during the daytime) | sea breeze; |
| a slight movement of the air | breath; |
| wind moving 1-3 knots; 1 on the Beaufort scale | light air; |
| wind moving 4-7 knots; 2 on the Beaufort scale | light breeze; |
| wind moving 8-12 knots; 3 on the Beaufort scale | gentle breeze; |
| wind moving 13-18 knots; 4 on the Beaufort scale | moderate breeze; |
| a natural phenomenon involving the structure or composition of the earth | geological phenomenon; |
| all phenomena that are not artificial | natural phenomenon; |
| the phenomenon of a person or thing rising into the air by apparently supernatural means | levitation; |
| after death the soul begins a new cycle of existence in another human body | metempsychosis; rebirth; |
| any natural phenomenon involving chemistry (as changes to atoms or molecules) | chemical phenomenon; |
| the phenomenon of an element existing in two or more physical forms | allotropism; allotropy; |
| chemical process in which one atom or ion or group changes places with another | exchange; |
| change in the electrical conductivity of a substance as a result of absorbing electromagnetic radiation | photoconduction; photoconductivity; |
| the disappearance of electrical resistance at very low temperatures | superconductivity; |
| an exchange produced by the chemical action of radiant energy (especially light) | photochemical exchange; |
| an emission of photoelectrons (especially from a metallic surface) | photoemission; |
| the formation of crystals | crystallisation; crystallization; crystallizing; |
| a powdery deposit on a surface | bloom; efflorescence; |