Symmetry
noun, の adjective
If you versus (compare) the title of these two things, you'll notice that they're the same as each other. They have symmetry.
たいしょう
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
アシメっていう左右非対称のショートカットにしてみようかなって思ってるんだよね。
I’m thinking of getting a short asymmetrical haircut called "ashime."