• 草花くさばな — grass and flowers
• 草案そうあん — draft / proposal
• 雑草ざっそう — weeds
• 草原そうげん — grassland / prairie
• 目草めぐさ — eye grass (a kind of herb)
• 草食そうしょく — herbivorous / plant-based diet

The character 草 shows the image of plants growing upward and uses the 艹 radical, called 草かんむり. It’s a common radical for plant-related kanji and appears in many everyday terms.

草くさが たくさん 生はえています。
There’s a lot of grass growing.

草案そうあんを書かき直なおしました。
I revised the draft proposal.