Category Nuances for spike:

• sharp,
• pointed,
• individual,
• synthetic,
• base,
• smaller,
• extraneous,
• metallic,
• mechanical,
• metal,
• dangerous,
• traditional,
• larval,
• single,
• unwanted,
• fine,
• abnormal,
• deadly,
• iron,
• fast,
• slender,
• mundane,
• hazardous,
• stationary,
• electrical,
• foreign,
• exogenous,
• abrupt,
• familiar,
• common,
• embedded,
• magnetic,
• temporary,
• primitive,
• unusual,
• old,
• exceptional,
• gross,
• distinct,
• localized,
• personal,
• large,
• narrow,
• suitable,

Simple Categories for spike:

• structure,
• tip,
• item,
• discharge,
• object,
• point,
• area,
• connector,
• hardware,
• bar,
• instrument,
• artefact,
• tool,
• event,
• occurrence,
• fixture,
• means,
• ground,
• fastener,
• edge,
• interruption,
• surface,
• cause,
• face,
• rod,
• bait,
• movement,
• equipment,
• explosion,
• article,
• thing,
• change,
• monument,
• projection,