Context: Regularity is a concept based on adherence to Masonic Landmarks, the basic membership requirements, tenets and rituals of the craft. Each Grand Lodge sets its own definition of what these landmarks are, and thus what is Regular and what is Irregular (and the definitions do not necessarily agree between Grand Lodges). Essentially, every Grand Lodge will hold that its landmarks (its requirements, tenets and rituals) are Regular, and judge other Grand Lodges based on those. If the differences are significant, one Grand Lodge may declare the other "Irregular" and withdraw or withhold recognition.

Question: What concept is based on adherence to Masonic Landmarks, basic membership requirements, and tenets and rituals of the craft?
Answer: Regularity

Question: Is each definition of regularity the same throughout all Masonic Lodges?
Answer: Each Grand Lodge sets its own definition

Question: When can a Grand Lodge declare another lodge as irregular?
Answer: If the differences are significant

Question: What concept is not based on adherence to Masonic Landmarks, basic membership requirements, and tenets and rituals of the craft?
Answer: Unanswerable

Question: When can a Grand Lodge declare another lodge as regular?
Answer: Unanswerable

Question: What are never considered "Irregular"?
Answer: Unanswerable

Question: Why are landmarks for every Grand Lodge the same?
Answer: Unanswerable