In the west, it is important for women to YODEL regularly.
|( が ) い*る||
to need something super important - but always written in kana, so I'm giving it a usefullness of zero, even though as a hiragana word it's more like a 3 or 4.
|よう*する ( に )||
in short, in sum
the one key point, the lynchpin of
the important points (unlike the related word 重点（じゅうてん）、 要点 is more than one point - more like a summary. Like instead of writing an essay, you'd just do a series of bullet points.
demand - more strident than the related word 求める （もとめる）
demand in the economic sense - supply and demand
This does NOT get to turn into a verb. You don't use する. You'd say 需要がある (there's a demand for xxx) or perhaps 需要を 満たす （じゅようをもたす） (there's enough of xxx to meet the demand).