Modifiers matching edge:

• sharp,
• free,
• straight,
• narrow,
• stationary,
• decorative,
• moving,
• blunt,
• peripheral,
• tight,
• vascular,
• horizontal,
• metal,
• hard,
• external,
• paved,
• irregular,
• concrete,
• photometric,
• complex,
• vertical,
• exposed,
• round,

Simple categories matching straight:

• limb,
• weapon,
• line,
• conductor,
• object,
• stock,
• surface,
• path,
• plate,
• form,
• blade,
• structure,
• wall,
• wood,
• side,
• fertilizer,
• edge,
• piece,
• pin,
• part,
• tube,
• member,
• activity,
• vessel,
• abrasive,
• seam,
• tree,
• device,
• thing,
• bar,
• tool,
• stick,
• road,
• material,
• connector,