The Spanish word 'yeti' comes from the Tibetan term 'yeh-teh', which referred to a 'small anthropomorphic animal'. This term entered Spanish, like many other languages, as a loanword to describe the legendary creature of the Himalayas, also known as the Abominable Snowman.

There are no simpler or more common Spanish words that are etymologically related to 'yeti', as it is a direct borrowing from Tibetan that maintains its specific meaning referring to the cryptozoological creature.

The English word 'yeti' is identical to the Spanish word, as both languages borrowed it from the same Tibetan source 'yeh-teh'. This is a case where English and Spanish share exactly the same word with the same meaning, making it particularly easy for English speakers to remember.