I'm new to Japanese and excited to learn!
OKAshley obtained 'Quiz Master'
4 years agoOKAshley finished the quiz 'Hiragana Quiz さ to の' and scored 100%
4 years agoOKAshley unlocked the drill 'Hiragana な to の'
4 years agoOKAshley completed the lesson 'Consonant N: Hiragana from な to の'
4 years agoOKAshley obtained 'Mind Like A Steel Trap'
4 years agoOKAshley unlocked the drill 'Dakuten Drills Round 3: だ to ど'
4 years agoOKAshley completed the lesson 'D by Dakuten: Hiragana from だ to ど'
4 years agoOKAshley obtained 'Drill Baby Drill'
4 years agoOKAshley unlocked the drill 'More Consonant Changes: た to と'
4 years agoOKAshley completed the lesson '"T" Sounds: Hiragana from た to と'
4 years ago
To answer your question about "aoi" / "ao" and "akai" & "aka" on the か to こ lesson, without the "-i" is the noun and with it, it is the adjective.