Modifiers matching vessel:

• traditional,
• straight,
• small,
• motorized,
• large,
• governmental,
• ceramic,
• demanding,
• slower,
• refractory,
• complex,
• wooden,
• smaller,
• commercial,
• shallow,
• mature,
• physical,
• thin,
• fast,
• japanese,
• experimental,
• cerebral,
• recreational,
• systemic,
• disabled,
• closed,
• naval,
• inflatable,
• metallic,
• intermediate,
• single,
• marine,
• buoyant,
• nautical,
• hollow,
• seagoing,
• fit,
• moving,
• critical,
• sized,
• sterile,
• liturgical,
• resistant,
• difficult,
• common,
• silver,
• tubular,
• domestic,
• natural,
• greek,
• empty,
• round,
• individual,
• great,
• sensitive,
• cultural,
• inside,
• tight,
• important,
• vulnerable,
• military,
• specialized,
• combatant,
• portable,
• narrow,
• simple,
• light,
• interesting,
• auxiliary,
• gold,
• several,
• sophisticated,
• powerful,
• concrete,
• top,
• curved,
• metal,
• tall,
• larger,
• elastic,
• public,
• utilitarian,
• open,
• cardiac,
• noncombatant,
• passive,
• conventional,
• central,
• thick,
• fixed,
• expensive,
• vital,
• peripheral,
• normal,
• local,
• nuclear,
• oceangoing,
• working,
• supporting,
• typical,
• developing,
• oriented,
• cylindrical,
• ordinary,
• specialised,
• chemical,
• voluntary,
• maneuverable,
• suitable,
• ornamental,
• functional,
• distensible,
• heavy,
• muscular,
• underwater,
• embryonic,
• biological,
• delicate,
• fluid,
• airborne,
• appropriate,
• flying,
• close,
• vascular,
• surrounding,
• advanced,
• ceremonial,
• maritime,
• plain,
• thoracic,
• sacred,
• private,
• physiological,
• imperial,
• industrial,
• unpowered,
• lovely,
• major,
• faster,
• everyday,
• medical,
• moveable,
• sanitary,
• coastal,
• classical,
• cerebrovascular,
• anatomical,
• foreign,
• adjacent,
• clean,
• unusual,
• awkward,
• branching,
• special,
• modern,
• unique,
• adult,
• nearby,
• inaccessible,
• floating,
• arterial,

Simple categories matching voluntary:

• organization,
• contribution,
• association,
• effort,
• item,
• society,
• organisation,
• activity,
• unit,
• club,
• project,
• group,
• movement,
• abstinence,
• institution,
• force,
• control,
• market,
• participation,
• arrangement,
• behaviour,
• task,
• agency,
• body,
• service,
• agreement,
• school,
• behavior,
• information,
• work,
• donation,
• measure,
• sector,
• transport,
• endeavor,
• alternative,
• migrant,
• grouping,
• vessel,
• action,
• helper,
• committee,
• choice,
• deposit,
• system,
• motion,
• option,
• assistance,
• easement,