が必要 => need; necessary N4
必要がある => Need/Need to N4
[必要「ひつよう」]はない => It is not necessary for A to be done N2
Needs, Requirements
尊敬語 => Honorifics N4
丁寧語 => polite form N4
謙譲語 => Humble form N4
は..語で何ですか => What does it mean... N5
Explain
必ずしも~とは限らない => Not necessarily; not always N3
[要「よう」]するに => A. In short/put simply, B N2
Adjectival, Descriptions
[尊敬語「そんけいご」] => Respectful form of A N4
Honorifics
要するに => in short; in a word; to sum up; to put it simply ~ N2
[謙譲語「けんじょうご」] => Humble form of A, humble form of する verbs N4
Honorifics