夫婦仲

1. Origins, structure, and basic meaning

• Structure: 夫婦仲 (ふうふなか) is a compound noun for the state or quality of the relationship between spouses.
• Basic usage: 夫婦仲がよい predicates a good relationship sustained by conversation, while 夫婦仲がぎくしゃくする describes that relationship becoming awkward through misunderstanding.

2. Common pitfalls and similar expressions

• The relationship, not the spouses, is the subject
  • Both sentences place a state expression after 夫婦仲が. Grammatically, what is good or awkward is the relationship between the spouses, not each spouse’s individual character.