Modifiers matching channel:

• common,
• elastic,
• linear,
• shared,
• tubular,
• secure,
• narrow,
• same,
• closed,
• noisy,
• extraneous,
• wireless,
• logical,
• natural,
• alternative,
• main,
• round,
• physical,
• over,
• current,
• spectral,
• artificial,
• single,

Simple categories matching tubular:

• component,
• body,
• structure,
• pasta,
• portion,
• form,
• part,
• organ,
• article,
• furniture,
• container,
• conduit,
• viscus,
• stent,
• organs,
• duct,
• construction,
• fabric,
• metal,
• shape,
• space,
• passage,
• thing,
• channel,
• object,
• tissue,
• assembly,
• surface,
• macaroni,
• vessel,
• member,
• installation,
• item,
• flower,
• cavity,
• material,
• option,
• mast,
• bone,
• adapter,
• area,
• element,
• garment,
• knit,
• shaft,