Simple categories matching unimportant:

• thing,
• activity,
• subject,
• content,
• details,
• words,
• matter,
• place,
• item,
• stuff,
• work,
• topic,

Members with property unimportant:

• silver_paper,
• music,
• bait,
• research,
• look,
• functional_words,
• athletics,
• right_reference,
• logo,
• interesting_scent,
• power,
• television_commercial,
• physical_education,
• art,
• trap,
• math,
• presidential_election,
• basketball,
• lake,
• nausea,
• eternal_life,
• color,
• beer,
• behavior,
• insulin,
• dvd,
• miscarriage,
• girlfriend,
• jacket,
• supernova,
• sport,
• breast,
• boolean_value,
• sickness,
• truth,
• injustice,
• history,
• action,
• old_clothing,
• background_scenery,
• rudimentary_care,
• islamism,
• manhole,
• hi_heart,
• reading,
• classics,
• security,
• plot,
• work,
• date,
• fraction,
• homosexuality,
• babysitting,
• dogma,
• drink,
• religious_affiliation,
• idleness,
• ladder,
• name_spelling,
• counting,
• love,
• childhood_friend,
• ritual,
• science,
• hairstyle,
• corruption,
• drum_stick,
• coat,
• whatnot,
• job,
• snare,
• spelling,
• fact,
• girl,
• clothing,
• football,
• scene,
• stance,
• basic_morals,
• town_gossip,
• school,
• movie,
• message,
• leisure,
• housework,
• greed,
• escalator_ride,
• chemistry,
• philosophy,
• writing,
• food,