Trade by Exchanging One Commodity for Another
This page is the CodyCross answer for the clue below from Space Exploration, Group 910, Puzzle 4 (Interstellar Dust).
Question is: Trade by Exchanging One Commodity for Another
and the answer is: BARTER
Word Meaning:
BARTER — An exchange of goods or services without the use of money.
Definitions from Wiktionary.