The Spanish word 'lápiz' (meaning 'pencil') comes from the Latin word 'lapis' meaning 'stone'. This etymology reflects the historical development of writing implements - before graphite and modern pencils, various stones and minerals were used for writing and drawing. The semantic shift from 'stone' to 'pencil' occurred as graphite, a stone material, became the primary medium for writing instruments we now know as pencils.

The word 'lápiz' is fairly unique in Spanish and doesn't have many common related words, though you might encounter 'lapicero' (pen) and 'lapicera' (pencil case), which are derived from 'lápiz'.

While English 'pencil' comes from a different root, we do see the Latin 'lapis' influence in English words like 'lapidary' (someone who cuts, polishes, or engraves stones) and 'lapis lazuli', the deep blue semi-precious stone. These words maintain the original Latin connection to stone.