husband and wife; married couple
夫 · 4 strokes
Pictograph of a man. The top horizontal stroke either distinguishes it from the character 大 or depicts a hairpin, something that was only worn by adults.
妻 · 8 strokes
Pictograph of a hand grabbing a woman's hair to take her as a wife. In ancient China, women of marriageable age wore hairpins (compare with 每).