The Avestan word zam-
Word zam-
Meaning earth, ground
See also Thracian: sem(e)la ‘land, earth’
Greek: χθων ‘earth, soil’
Tocharian B: keṃ ‘earth’
Proto-Anatolian: *déǵ-m / dǵ-em- ‘earth’
Proto-Indo-European: *dhéĝhōm ‘earth’
Synonyms būmi-

Other words that might be of interest
drvaēna- ‘wooden’, gairi- ‘mountain’, asman- ‘stone, sky’, razura- ‘forest, grove’