軒並み

1. Origins, structure, and basic meaning

• Structure: 軒並み is read as のきなみ. Adverbially it means that items are affected across the board; as a noun it can mean a continuous row of houses and eaves.
• Basic usage: 軒並み運休になる means services are broadly all suspended, while 古い軒並み describes an old streetscape of adjoining houses.

2. Common pitfalls and similar expressions

• Change of role and sense
  • The adverbial use stresses a common result across many items, whereas the noun use names the physical row of houses.
• Strength of coverage
  • It strongly suggests a broad, near-uniform effect and may overstate a situation that applies to only a few items.