Proto-Indo-European *kʷer- "to make" became both Greek τέρας teras "monster, marvel" and Aeolian πέλωρ pelōr "portent, prodigy, monster" (as in peloria), perhaps from the sense "that which does harm" (AHD). Τέρας is found in terabit, terawatt, terahertz, meaning a unit times 10¹², the next prefix up from giga-. The two Greek reflexes p and t are due to dialect differences.
The suffixed form *kʷer-mn̥ became Sanskrit कर्म karma "act, deed". The form *kʷer- became kr̥ "to make", which combined with sam- "together" to form संस्कृत saṃskr̥ta "put together, well-formed", Sanskrit.