The Spanish word 'rascacielos' (meaning 'skyscraper') is a compound word that was created as a calque (word-for-word translation) of the English word 'skyscraper'. It combines 'rascar' (meaning 'to scrape') and 'cielos' (meaning 'skies').

The first element 'rascar' comes from Late Latin 'rasicare' meaning 'to scrape', while 'cielos' comes from Latin 'caelum' meaning 'sky' or 'heaven'. This mirrors exactly how the English word 'skyscraper' is formed from 'sky' + 'scrape'.

This is a great example of how Spanish and English sometimes create new words in parallel ways to describe modern concepts, even though the root words come from different sources.

Some simpler related Spanish words include 'rascar' (to scratch or scrape) and 'cielo' (sky, heaven). These are the basic building blocks of 'rascacielos' and are much more common in everyday Spanish. For example, 'rascar' might be used when talking about scratching an itch, while 'cielo' is frequently used both literally (looking at the sky) and figuratively (referring to heaven).

The English word 'skyscraper' is directly related to 'rascacielos', as the Spanish word was modeled after it. Both words paint the same vivid picture of a building so tall it appears to scrape the sky. The English 'scrape' is related to the Spanish 'rascar' through a distant common ancestor, though they evolved through different paths - 'scrape' through Germanic languages and 'rascar' through Latin.