懵 ⇒

• 忄         xīn, Kangxi radical 61 (心) as a vertical side element
• 瞢         méng, eyesight obscured/to feel ashamed
  • 目         mù, eye/item/section/list/catalogue/table of contents/order (taxonomy)/goal/name/tit...

懂 ⇒

• 董         Dǒng/dǒng, surname Dong, to supervise/to direct/director
  • 重         chóng/zhòng, to repeat/repetition/again/re-/classifier: layer, heavy/serious/to attach import...
    • 里         lǐ/Lǐ, [裏]/[裡], variant of 裡|里[lǐ], lining/interior/inside/internal/also written 裏|里[lǐ], Li (su...
      • 土         Tǔ/tǔ, Tu (ethnic group)/surname Tu, earth/dust/clay/local/indigenous/crude opium/unsop...
      • 田         Tián/tián, surname Tian, field/farm/CL:片[piàn]
    • 千         qiān, [韆], thousand, see 鞦韆|秋千[qiū qiān]
      • 十         shí, ten/10
      • 丿         piě, radical in Chinese characters (Kangxi radical 4)/see 撇[piě]
  • 艹         cǎo, grass radical 草字頭兒|草字头儿[cǎo zì tóu r]
• 忄         xīn, Kangxi radical 61 (心) as a vertical side element

懵 ⇒

懂 ⇒

懵 ⇒
懵         měng, stupid
懵懂         měngdǒng, confused/ignorant

懂 ⇒
懂         dǒng, to understand/to comprehend
懂得         dǒngde, to understand/to know/to comprehend
懂事         dǒngshì, sensible/thoughtful/intelligent
难懂         nándǒng, [難懂], difficult to understand
懂行         dǒngháng, to know the ropes
易懂         yìdǒng, easy to understand
懵懂         měngdǒng, confused/ignorant
不懂装懂         bùdǒngzhuāngdǒng, [不懂裝懂], to pretend to understand when you don't