score
"Score" is a wonderfully versatile word in English — it works as a noun, a verb, and even has a historical meaning as a number. It has many senses, but here are the most common and useful ones you'll encounter every day.
In older English, 'a score' meant exactly twenty of something. You still see this in famous phrases and literature. For example, 'four score' means 80 (4 × 20). It's not used much in everyday modern speech, but you'll meet it in historical texts.
historical, literary language · Formal, more common in older texts