っぽい => Seems A; A-ish N3
Adjectival, Description
っぽい => seems like; somewhat; -ish; easily does; often does ~ N2
いっぽう(で) => on one hand, on the other hand; although ~ N2
Compare
[一方「いっぽう」]だ => Change A continues, A does not stop N2
Miscellaneous
[一方「いっぽう」] => On one hand A, on the other, B; Although A, at the same time, B N2
Contrast,Surprise
んです => Because, by… N4
Situations and Experiences
~いかんだ / いかんで、~ /  ~いかんによって、~ => It depends ... N1
Related, corresponding
...たいんですが => want N4
How to say the beginning
どんな...ですか => How N5
Confirm
んですが => opening the story N4
んだった => If... (express regret) N2
Regret
んです => to explain something; show emphasis N4