Interesting. I always thought of a spade as a gardening implement. I only think of the suit when I'm playing cards. In Arabic, the word for "slave" 'Abed, is actually color-blind, following the ancient world's practice of slavery in war. Linguistically, the word means worshipper (suggesting an element of choice). Suffixed with Allah or one of the 99 other names for God, Abed becomes a popular name.