obverse
Posted: 2020-10-18 05:00:01    (see more from www.merriam-webster.com)

Heads or tails? If you called heads, obverse is the word for you. Since the 17th century, we've been using obverse for the front side of coins (usually the side depicting the head or bust of a prominent person). The opposite of this sense of obverse is reverse, the back or tails side of a coin. Since the 19th century, obverse has referred to an opposing counterpart or an opposite. Additionally, it can be an adjective meaning "facing the observer or opponent" or "being a counterpart or complement."