Buddha
(the Teacher)
The historical Buddha (also referred to as Gautama Buddha or Shakyamuni Buddha, in reference to his family and clan names respectively) was born Siddhartha Gautama approximately 2550 years ago in what is now Nepal. "Buddha" was not his name but a description of his attainment. "Buddha" means one who is awake. Everyone has the potential to attain Buddhahood. It is the condition of transcending selfishness and seeing life as it is, not as one wishes it to be, while retaining compassion for all beings.
The Buddha depicted above is called Amida Buddha (also Amitabha), and is regarded as an idealized depiction of Buddhahood to which all beings can aspire. "Amida" means "without measure" and is also translated as "unlimited wisdom and compassion." At our temple you will hear us recite the Nembutsu, "Namu Amida Butsu." It means, "I bow in gratitude to the unlimited wisdom and compassion of life as my enlightened teacher." This is not to say that we bow in worship of a statue or even of an historical figure, rather that the statues and other images are artistic representations of the beauty of life-as-teacher, in the case of images of Amida Buddha; and in memory of a great teacher, in the case of images of the historical Buddha. (See also: Buddhist Symbols)
Dharma
(The Teachings)
"Dharma" has many translations in English. In Buddhism, "Dharma" can mean specifically the system elaborated by Gautama (a.k.a. Shakyamuni) Buddha for coming to terms with life, and also the teachings each being receives from living his/her own life. It can also mean truth or reality. Buddhism is a tricky word because there is no "ism" about it. There is no rigid dogma, only a set of guidelines which may or may not be useful to an individual for figuring life out as it is. The preferred name for what is called Buddhism in the West is Buddhadharma, i.e. "awakening to reality" or "teachings of enlightenment."
Sangha
(The Taught)
The Sangha, in the broadest terms, is the universal community of beings who consciously seek enlightenment, whether they define themselves as Buddhists or not. The term "Sangha" is used in the Theravadin tradition to mean only Buddhist monks and nuns, or -- in the Mahayana tradition -- all wisdom seekers who identify themselves as Buddhists, or -- colloquially -- congregations of Buddhist temples.