Most physical things, due to being physical, have at least two opposing sides, since there's at least one dimension, exemplified by a cube. A cube has front and back, left and right, and top and bottom.
For non-physical things, like a piece of music, or a television show, they still have the dimension of time, where the opposing sides are usually the beginning and end of the work. But such works can have physical representations, like the parts for the left and right ears, or the left and right of a frame of animation, respectively.
"While opposing sides are usually different, what if they were the same?" That's the idea behind this index.
It's like Two-in-One Tropes, because there's two sides in one object, but they don't form a single object of the same type, usually. Unless they do.
Something involving both of a pair of organs, like eyes, arms, or legs, has a good chance of going in this index, since there's a good chance that the organs being symmetric, and therefore there's a lot of overlap with Stock Poses.
The amount of "similarity" between ends can vary, and the barest requirement is that they're the same type of thing, such that Two-Faced can count, since the type is "face", even though they look different.
This is basically the opposing index to Juxtaposition Tropes, although the latter is a bit broader, allowing non-physical pairings of opposing things, unlike this, which doesn't index things like The Horseshoe Effect.
The Competition Index, Dueling Tropes, and other indexes involving people, have some overlap due to having people interacting and being each of the two sides.
Sub-Tropes:
- Dual Wielding: Trope/Index, about having two weapons, one for each hand.
- Please Reflect on This Index: Mirrors literally create the second side.
- Rhyme Tropes: A pair of lines share a ending, and a pair naturally has two sides.
- Split Screen: People/things, split over two screens, usually at opposite ends of the full screen.
Tropes:
- Ad-Break Double-Take
- Air Quotes
- Ambidextrous Sprite
- Armless Biped
- Back-to-Back Badasses
- Back-to-Back Poster
- Between My Legs
- Bookends
- Conjoined Twins: They can be without sides, like a hand connected to the back of a head, for instance, but the standard is with even sides.
- Cross Counter
- Cute Indignant Girl Stance: The fists are facing opposite to each other.
- Double Weapon: A weapon on each end.
- Dynamic Akimbo
- Endless Corridor
- Finger-Forced Smile
- Finger Framing
- Finger-Tenting
- Fun with Palindromes
- Gotta Get Your Head Together
- A Head at Each End
- Held Gaze
- Here We Go Again!
- Heroic Ambidexterity
- Impending Clash Shot
- Juxtaposed Halves Shot
- Kewpie Doll Surprise: Anime women flap their arms in a "Y" pose when shocked or excited.
- A Lady on Each Arm
- Lover Tug of War
- Mirrored Confrontation Shot
- Palm on Cheek Pose
- Prayer Pose
- Pummel Duel
- Punch Parry
- Running on All Fours
- Scales of Justice
- Staredown Faceoff
- Staring Contest
- Spaghetti Kiss
- Sweetheart Sipping
- Tribal Carry
- Twisted-Knee Collapse
- Two-Faced
- Two-Headed Coin
- Versus Character Splash
- V-Sign
- Where It All Began: Your path ends at the beginning.
