Modifiers matching waterway:

• common,
• rural,
• nearby,
• over,
• natural,
• larger,
• local,
• active,
• continuous,
• shallow,
• clean,
• recreational,
• inland,
• urban,
• narrow,
• small,
• open,
• adjacent,
• moving,
• unobstructed,
• artificial,
• restricted,
• major,
• smaller,
• navigable,
• established,

Simple categories matching open:

• space,
• object,
• flower,
• file,
• area,
• business,
• water,
• structure,
• thing,
• land,
• source,
• excavation,
• ground,
• ampoule,
• aquarium,
• projection,
• item,
• envelope,
• facility,
• conveyance,
• country,
• service,
• mollusc,
• curve,
• market,
• design,
• building,
• system,
• pattern,
• grassland,
• article,
• meat,
• box,
• implementation,
• container,
• equipment,
• surface,
• body,
• fabric,
• woodland,
• waterway,
• highway,
• lagoon,
• activity,
• prey,
• shelter,
• version,
• enclosure,
• marketplace,
• gesture,
• event,
• position,
• housing,
• conduit,
• image,
• feature,
• stage,
• seam,
• pit,
• forest,
• vegetation,
• construction,
• type,
• application,
• fixture,
• liquid,
• terrain,
• site,
• package,
• establishment,
• medium,
• ocean,
• conflict,
• car,
• door,
• nut,
• bivalve,
• struggle,
• field,
• group,
• competition,
• clearing,
• workplace,
• grain,
• food,
• program,
• function,
• issue,
• shellfish,
• unit,
• community,
• forum,
• society,
• fire,
• dish,
• fencing,
• patch,
• cell,
• burning,
• place,
• menu,
• appliance,
• beam,
• section,
• material,
• vehicle,
• flow,
• watercourse,
• meeting,
• stairway,
• substance,
• entity,
• organization,
• air,
• receptacle,
• location,
• part,
• document,
• vessel,
• designer,
• room,
• orifice,
• territory,
• procedure,
• specification,
• institution,
• network,
• environment,
• boat,
• standard,
• powerboat,
• basin,
• wall,
• view,
• shape,
• resistance,
• cover,
• collocation,
• face,
• office,
• situation,
• sector,
• light,
• roll,
• nester,
• form,
• information,
• code,
• habitat,
• knowledge,
• volume,
• passage,
• wound,
• science,
• perch,
• canopy,
• sea,
• region,
• protocol,