to be jealous of / fear / dread / scruple / to avoid or abstain from / to quit / to give up sth
忌
=
己
+
心
:
Joan of Arc (ji) wants to just give up (忌), so in the space station's bathroom (Ø4) she pulls out her heart (心) using a butcher's hook (己).
to avoid mentioning / taboo word / name of deceased emperor or superior
讳
=
讠
+
韦
:
For Helga Horse (hu) soft leather gloves (韦) are a big taboo (讳), so she sets up an advertising column (讠) in the Eiffel Tower's bathroom (ei4) with an image of crossed-out leather gloves to tell everyone that they should not talk about it.