Cases of word usage

1) a strong feeling of loyalty to one's country; (the belief in) a political attitude or system based on a feeling that one's country should be politically independent (nationalism)

2) a time when a particular event takes place or should take place; a reason; cause (occasion)

3) (the belief in) the principle that war should and could be abolished (pacifism)

4) an act of treating with great lack of respect something that should be sacred (sacrilege)