Plantar Flexion vs Dorsiflexion, Inversion vs Eversion

So you understand flexion and extension, but what is this dorsiflexion and plantar flexion business?

[ayelenyuliana]

Thank you so much for this, I wasn't understanding my swimming teacher in breast style cuz he used this professional vocabulary, now I understand it❤

[m.taylor]

I don't know why scientists don't just refer to it as heel up flexion and toe up flexion which is easier with everyday language.

[AyaOsamaDarwish-zo]

Can we classify any of them as flexion or extension