This word does surface when a crisis does surface on the horizon. A crisis when it does surface it means that there is something that has gone astray. However this word could be used for personal quarrels. These quarrels even could be used among lovers. Yet everybody's existence, the word critical becomes a must simply because human outlook and inner feelings do require it. Such a demand does occur more often than none. Thus everybody must be preferred.

DR.HASHIM S.H. BEHBEHANI