WHOLE CHARACTER
顺shùn
in the same direction; smooth; along; following; in order; one after another; obey; yield to
顺 is going along smoothly: 顺利 'smooth', 顺序 'order', 顺便 'while you're at it', 顺从 'to obey'.
ZDIC: 会意,从页、从川 — the head side with the flowing river: things going one way.
LEFT: THE RIVER PIECE 川 (CHUĀN) NAMED BY ZDIC
川chuān
river; stream
A standalone character (chuān, river); where its shape appears as a side piece, that page states the role.
In 顺: left: the river piece 川 (chuān) named by ZDIC Shown with its documented or clearly limited role.
RIGHT: THE HEAD SIDE NAMED BY ZDIC
页yè
page; the head radical (from 頁)
A standalone character meaning page; as a right-side piece in many characters it is the head side. Each page states its own role and limits.
In 顺: right: the head side named by ZDIC The old head piece; today's 'page' meaning is kept separate.