ŝtrumpeto

A sock is a little stocking. Ŝtrumpo is a stocking, the long one that goes up the leg, and -et- is the diminutive suffix. Put them together and you get the short one that stops at the ankle: ŝtrumpeto, a sock. It is the same logic English uses when it calls a small book a booklet, except Esperanto applies it everywhere and expects you to keep up.

Why you meet the sock before the stocking. Ŝtrumpo has not earned a page on this site yet: at rank 2422 it sits outside chapter 24's band, while ŝtrumpeto scrapes in at 2272. That is a fair reflection of how people actually talk. Most of us put socks on every morning and stockings on hardly ever, so the derived word is commoner than the word it is derived from. When ŝtrumpo arrives in a later chapter it will feel like meeting the parent after you already know the child.

The -et- suffix, briefly. It shrinks: domo a house, dometo a cottage; rido a laugh, rideto a smile; lago a lake, lageto a pond. Its opposite is -eg-, which magnifies. Neither changes the part of speech; both change the size and, often, the affection.

Around the foot. Ŝuo is a shoe, piedo the foot, boto a boot, ganto a glove (the hand's equivalent), and ŝtrumpkalsono is a pair of tights, which is a compound worth reading twice.