Thought
Idea
noun
The concept you think about is your thoughts. It is your ideas.
しそう
This is a jukugo word, which usually means on'yomi readings from the kanji. You haven't learned the on'yomi for 思 yet, so here's a mnemonic to help you:
All your thoughts and ideas are about sheep (し) right now. You just can't stop thinking about sheep. Are you thinking about sheep right now? What kind of sheep are they?
コウイチの思想にはついていけません。
I can't follow Koichi's thoughts.
きのう、ニュースを見ていたら、ビエトが思想犯としてたいほされたニュースが出て本当にびっくりしたよ。
When I was watching the news yesterday, I was so shocked that it said Viet was arrested for thoughtcrimes.
コウイチはトーフグの創始者であり、近代日本を代表する啓蒙思想家である。
Koichi is the founder of Tofugu and one of the great modern Japanese thinkers.