apologia (n.)

• apologetics
• apology
• argument
• argumentation
• bicker
• bickering
• casuistry
• clarification
• contention
• controversy
• defense
• disputation
• dispute
• elucidation
• explanation
• hassle
• hubbub
• interpretation
• justification
• litigation
• logomachy
• polemic
• polemics
• rhubarb
• set-to
• wrangling