idea, thought, conception, think
想 centers on mental activity: forming ideas, thoughts, and conceptions, or the act of thinking itself.
想 combines 相 (mutual, aspect) with 心 (heart/mind), suggesting the mind forming images or ideas. The exact historical development is well established as a phono-semantic compound where 相 contributes the sound and the idea of mutual interaction.
The top part 相 looks like a tree 木 beside an eye 目, and the bottom is the heart 心. Picture your mind's eye looking at a tree and your heart forming an idea about it: that mental image is a thought.
For ソウ, imagine a thought so profound it makes you say 'so...' out loud: so -> ソウ, as your mind forms a deep idea.
imagination; supposition; guess
expectation; anticipation; prediction; forecast; conjecture
impressions; thoughts; feelings; reactions
delusion; wild idea; (wild) fancy; (ridiculous) fantasy
ideal; ideals
thought; idea; ideology
hypothesis; supposition; assumption; expectation; anticipation
poor; pitiable; pathetic; pitiful
idea; conception
imagination; supposition; virtual; potential (enemy)
fantasy; illusion; vision; dream
plan; plot; idea; conception; vision; scheme
association (of ideas); being reminded (of something); suggestion
conception; idea; thought
meditation; contemplation
daydream; fantasy; fancy; vision
amiability; friendliness; affability; sociability
recollection; retrospection; reflection; reminiscence
dream; vision; reverie
more than expected
unexpected; unforeseen; strange
(power of) imagination
ideal