Dream & Dreamer differences

Heya.

This is my first time on this site, hopefully I'm in the right place.
I was just wondering if anyone could help me with this Kanji translation.
Y'see I was looking for the symbol for 'Dream' or 'Dreams' and found that this is it here:

And then I wondered if 'Dreamer' was just gonna be the same thing. So I searched for that and found both of these:






So I'm just trying to understand the differences between these. The single symbol for 'Dream' appears to be one third of that first 'Dreamer' image. What are the other two symbols on that shirt to make it mean Dreamer? And also what's the difference between both of those 'Dreamer' Kanji shirts?

Any help would be greatly appreciated!

夢 (yume) : dream(s)
夢想家 (musouka) : 夢想 means deamer, someone who are day-dreaming something (mostly something impossible nor not really liekely to happen)
空想家 (kuusouka) : someone who has a lot of imagination and likes imagining things.

Compared with 空想家, 夢想家 has rather a negative connotation, if not always.