憲法【けんぽう】
constitution, rules, regulation
違憲【いけん】
unconstitutionality
憲章【けんしょう】
charter
改憲【かいけん】
constitutional change, revising the constitution
憲政【けんせい】
constitutional government, exemplary government, excellent government
立憲【りっけん】
constitutionalism, Constitutional Democratic Party of Japan
官憲【かんけん】
officials, authorities