20 Old HSK word(s): ☊没意思 ** A ☊有意思 ** A ☊思想 ** A ☊意思 ** A ☊不好意思 ** B ☊毛泽东思 ** C ☊沉思 ** C ☊思考 ** C ☊思念 ** C ☊思索 ** C ☊思维 ** C ☊心思 ** C ☊马克思主 ** C ☊反思 ** D ☊构思 ** D ☊思 ** D ☊思潮 ** D ☊思前想后 ** D ☊思绪 ** D ☊饮水思源 ** D
哀思* * 大胆构思* * 单相思* * 够意思* * 好意思* * 花心思* * 苦思* * 凝思* * 情思* * 若有所思* * 深思* * 挖空心思* * 相思* * 小意思* * 寻思* * 一门心思* * 意思意思* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

意 thought, idea, opinion / think
思 think, consider, ponder / final particle
意 thought, idea, opinion / think
思 think, consider, ponder / final particle
Hsk Characters: 思 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
思 601D + 思 + + think, consider, ponder / final particle 心， 忄 思 Heart 思 (DENKEN) si1 +

Korean:

思 + 思 생각할사 (생각하다, to think)
12 NHSK word(s): 意思* 2 yi4 si5idea/ opinion/ meaning/ wish/ desire/ CL:個|个[ge4] 不好意思* 5 bu4 hao3 yi4 si5to feel embarrassed/ to be ill at ease/ to find it embarrassing (to do sth) 思考* 5 si1 kao3to reflect on/ to ponder over 思想* 5 si1 xiang3thought/ thinking/ idea/ ideology/ CL:個|个[ge4] 反思* 6 fan3 si1to think back over sth/ to review/ to revisit/ to rethink/ reflection/ reassessment 不可思议* 6 bu4 ke3 si1 yi4inconceivable (idiom)/ unimaginable/ unfathomable 构思* 6 gou4 si1to outline a story/ to make a preliminary sketch 思念* 6 si1 nian4think of/ long for/ miss 思索* 6 si1 suo3think deeply/ ponder 思维* 6 si1 wei2(line of) thought/ thinking 思绪* 6 si1 xu4train of thought/ emotional state/ mood/ feeling 沉思* 6 chen2 si1contemplate/ contemplation/ meditation/ ponder
KOREAN6000 word(s):
3 KOREAN 2500 New HSK words):
意思 + yìsi 의미. 뜻. uimi. tteus.
思考 + sīkǎo 사고하다. 사색하다. 사유하다. 깊이 생각하다. sagohada. sasaeghada. sayuhada. gip-i saeng-gaghada.
思想 + sīxiǎng 사상. 의식. sasang. uisig.
2 KOREAN Sentence(s):
电影很有趣 / 有意思。 + 영화는 흥미로웠어요. yeong-hwahneun heungmirowosseoyo.
我不明白这个意思。 + 저는 그 뜻을 이해 못 해요. jeoneun geu tteuseurihae mot haeyo.