官能团

functional group (chemistry)

surname Neng

can / to be able to / might possibly / ability / (physics) energy

surname Guan

government official / governmental / official / public / organ of the body / CL:個|个[ge4]

round / lump / ball / to roll into a ball / to gather / regiment / group / society / classifier for a lump or a soft mass: wad (of paper), ball (of wool), cloud (of smoke)

dumpling

function / capability / sense (i.e. the five senses of sight 視|视, hearing 聽|听, smell 嗅, taste 味 and touch 觸|触) / faculty (i.e. specific ability)