The Spanish word 'palma' comes directly from the Latin word 'palma', which had the dual meaning of both 'palm of the hand' and 'palm tree'. This dual meaning has been preserved in Spanish, where 'palma' can refer to both the palm of your hand and the palm tree. The connection between these two meanings likely comes from the visual similarity between the flat, spread-out palm of a hand and the spreading fronds of a palm tree.

Some related Spanish words include 'palmada' (a slap or clap, made with the palm of the hand), 'palmera' (palm tree), and 'palmear' (to clap). All these words build upon the basic meaning of 'palma' and relate to either the palm of the hand or palm trees.

The English word 'palm' is directly related to Spanish 'palma', as both come from the same Latin root. Just like in Spanish, English 'palm' can refer to both the palm of the hand and the palm tree. Related English words include 'palmer' (a medieval pilgrim who carried a palm branch), 'palmistry' (reading palms to tell fortunes), and 'palm off' (to pass something off deceptively, originally by concealing it in the palm of one's hand).