faction n. 派别，小集团 (a group within a larger group that has different ideas and opinions than the rest of the group) /ˈfækʃ(ə)n/
- Most of us chose cereal for breakfast, but a small faction of our group decided to eat eggs and bacon instead.
fiction n. 虚构 (something that is not true) /ˈfikSH(ə)n/
- It is much more difficult to write fiction than non-fiction because the former demands inventing not only characters, but scenarios, motivation, plot, and dialogue.
factitious adj. 人工的 (produced by humans rather than by natural forces) / fakˈtiSHəs/
- Veronica's illness turned out to be factitious, the result of self-induced stress rather than any external, natural factors.
fictitious adj. 虚构的 (not true or real) / fikˈtiSHəs/
- Even though the movie used fictitious characters, the story seemed realistic because of its veritable historical setting.
fractious adj. 易怒的 (irritable or peevish) /ˈfrakSHəs/
- Connor's fractious mood, snapping at the wait staff and storming off after an imagined slight, ruined the rehearsal dinner.
fastidious adj. 小心谨慎的，挑剔的 (very careful about how something is done) / faˈstidēəs/
- Keiko was a fastidious eater who took small bites, chewed slowly, and carefully wiped her mouth at regular intervals.
factious adj. 引起派系斗争的 (seditious) /ˈfækʃəs/
- ISIS is a factious faction that uses violence and coercion in its attempts to replace existing political systems with an ideologically regressive model based on medieval Caliphates.
friction n. 摩擦，冲突 (disagreement or tension between people or groups of people) /ˈfrikSH(ə)n/
- Syria fell into civil war because of friction between the ruling Alawites and the majority Sunni population.