apologetics (n.)

• apologia
• apology
• argument
• argumentation
• bicker
• bickering
• casuistry
• contention
• controversy
• defense
• disputation
• dispute
• divinity
• eschatology
• hagiography
• hagiology
• hassle
• hubbub
• litigation
• logomachy
• polemic
• polemics
• rationalism
• religion
• rhubarb
• secularism
• set-to
• soteriology
• systematics
• theology
• wrangling