庚 is a Chinese hanzi, listed here under the keyword “7th heavenly stem”. It is built from 广 (wide), 一 (one) and 人 (man). It appears as a component in 8 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “wide” + “one” + “man”. 庚 is among the results, together with every other character containing the same shapes.
Open 庚 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.