WordNet: piki, terva

any of various dark heavy viscid substances obtained as a residue

• hypernym asfaltti, bitumi

• hyponym kivihiiliterva

piki

• (suomi) pikimusta (derivationally related)
• (englanti) pitch (synonyymi)

terva

• (suomi) tervata (derivationally related)
• (englanti) tar (synonyymi)