nonmetal

nouns

a chemical element lacking typical metallic properties
nonmetal
is a type of (narrower)
any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
chemical element, element

adjectives

not containing or resembling or characteristic of a metal
"nonmetallic elements"
nonmetal, nonmetallic