puzzle
The Spanish word 'rompecabezas' translates to 'puzzle' in English. The term 'rompecabezas' literally means 'break heads', which reflects on the mental effort one often needs to put in solving puzzles. In a puzzle, one has to assemble often complex and interlocking pieces in a specific way to make up a complete picture or pattern, which is much like the concept of a 'rompecabezas' in the Spanish language.
I like to solve a puzzle in my free time.
This phrase expresses the speaker's enjoyment of solving puzzles as a leisure activity.
We bought a thousand-piece puzzle for the party.
In this example, the speaker is mentioning a specific puzzle that was purchased for a social event.
The puzzle I assembled was very complicated.
This sentence describes the challenge of a particular puzzle the speaker worked on.