几

ji

(small) table; a few; how many

茶几 tea table; 几个 how many?; 几天 how many days?

A table (几) makes you wonder: 'How many (几) cups can it hold?

机

ji

machine, device

opportunity, occasion

危机 crisis

on an old wooden (木) table (几) an old machine is sitting and you wonder, "How many (几) functions does this old device have?"

凡

fan

ordinary, all, every, whatever

凡人 ordinary person; 非凡 extraordinary (lit. not-ordinary)

凡例 general rules (in prefaces); 凡是 every, all

平凡 plain, unremarkable; 凡是 all that

under a table (几) one puts stuffs (丶) that are ordinary

风

feng

wind

风格 style; 风声 rumor or wind of something happening

风气 social trends lit. wind energy

Symbolizes the shape of a fully inflated (㐅) sail (凡) with strong wind.