Words are images, so it's hard to tell how to distinguish them. It's easier to see them by comparing pictures!
To put it simply,
Oracle Bone Inscriptions is more like a symbol or a stick figure, because at that time, it was all cut out on the bone surface with a sharp instrument, so the external strokes look sharp and angular, and they are all composed of short lines!
The bronze inscription, which looks like some bugs, twists and turns. The bronze inscription and the seal script are more similar. At this time, it began to look like the current text, horizontal and vertical, and stood upright!
Xiao Zhuan is also curved and winding. Compared with the bronze seal, the strokes are slimmer and longer, and the overall framework of the characters is stable and almost square!
basically, we can recognize the official script, most of which are flat in appearance and generally smooth in structure!
regular script, one stroke and one drawing are well-regulated! A stroke is a stroke, clear!
Running script, basically, the connection between strokes is clear, without the rules of writing
cursive script, most people can hardly recognize it as cursive script! However, cursive script is not just a casual sketch. Cursive script also has strict strokes, and sometimes the difference in the size of one point and one bend is another word!