pho·to·graph
Pronunciation: \ˈfō-tə-ˌgraf\
Function: noun
Date:1839

: a picture or likeness obtained by photography

pic·ture
Pronunciation: \ˈpik-chər\
Function: noun
Etymology: Middle English, from Latin pictura, from pictus, past participle of pingere to paint — more at paint
Date: 15th century

1: a design or representation made by various means (as painting, drawing, or photography)
2a: a description so vivid or graphic as to suggest a mental image or give an accurate idea of something [the book gives a detailed picture of what is happening]
2b: a mental image
3: image , copy
4a: a transitory visible image or reproduction
4b: motion picture cplural : movies
5: tableau 2
6: situation [took a hard look at his financial picture]

pho·tog·ra·phy
Pronunciation: \fə-ˈtä-grə-fē\
Function: noun
Date: 1839

: the art or process of producing images by the action of radiant energy and especially light on a sensitive surface (as film or a CCD chip)

source: Merriam-Webster Online Dictionary

攝影：一個以放射性能量的活動製作成畫面的過程。
相片：以攝影得出腦內／心理上的影像。
take picture：拿／取那個腦內／心理上的影像。