Yoni

1. In Hinduism, a stylized representation of a vulva worshiped as a symbol of a goddess or Shakti.
2. The female genitalia, regarded as a divine symbol of sexual pleasure.
3. The Tantric symbol of the feminine.

According to the OED the word first appears in English in 1799 and is derived from the Sanskrit yonih, womb, abode, source.
Lingam

1. In Hinduism, a stylized phallus worshiped as a symbol of the god Shiva.
2. The penis.
3. (In Sanskrit grammar) the masculine gender.

Again, the word is from the Sanskrit liṅga, liṅgam, mark, penis. It is first recorded in English in 1719.