ヨウ 
い.る かなめ 
[] lower back () need () essential () essence
               
かなめ (n) (1) pivot, (2) vital point, cornerstone, keystone, (3) Japanese photinia
ようする (vs-s,vt) to need, to demand, to take, to require
ようするに (exp,adv) in a word, after all, the point is ..., in short ...
ようは (adv) in short, the point is
いる (v5r,vi) to need
よういん (n) essential member, necessary person, personnel
よういん (n,adj-no) main cause, primary factor
ようきゅう (n,vs) demand, firm request, requisition, requirement, desire
ようけん (n) (1) important matter, (2) requirement, requisite, necessary condition, sine qua non
ようこう (n) main principle, gist, general plan, guidelines, outline
ようこう (n) important points
ようし (n) point, essentials, gist, summary, fundamentals
ようしょ (n) important point, important position
ようしょう (n) important point, strategic position, key point
ようしょく (n) important office
ようじん (n) important person
ようせい (n,vs) claim, demand, request, application
ようそ (n) (1) component, factor, item (e.g. in list), (2) (comp) element (e.g. in array), member (e.g. data structure)
ようちゅうい (n) attention (care) required, needs special attention
ようてん (n) gist, main point
ようぼう (n,vs) demand for, request
ようやく (n,vs,adj-no) summary, digest
ようりょう (n) (1) point, gist, essentials, tenets, outline, (2) knack, trick, the ropes

Links: KanjiDic: EDict : Wikimedia
Etymologies: 中文字譜 : 説文解字