Modifiers matching life:

• teen,
• violent,
• everyday,
• short,
• personal,
• meaningful,
• american,
• adolescent,
• real,
• mental,
• young,
• social,
• interesting,
• vocational,
• spiritual,
• organizational,
• urban,
• new,
• modern,
• religious,
• individual,
• graceful,
• rural,
• literary,
• early,
• cultural,
• working,
• private,
• good,
• japanese,
• corporate,
• civic,
• professional,
• marine,
• christian,
• colonial,
• jewish,
• useful,
• communal,
• healthy,
• adult,
• conscious,
• greek,
• common,
• secular,
• academic,
• public,
• islamic,
• artistic,
• reproductive,
• economic,
• affected,
• underwater,
• unconscious,
• agricultural,
• medieval,
• black,
• digital,
• contemporary,
• chinese,
• animal,
• underground,
• intellectual,
• terrestrial,
• stable,
• small,
• danish,
• refined,

Simple categories matching underground:

• area,
• structure,
• liquid,
• property,
• pipeline,
• tunnel,
• material,
• harvester,
• cistern,
• facility,
• installation,
• supply,
• space,
• vegetable,
• bunker,
• formation,
• tank,
• expanse,
• room,
• cave,
• cavern,
• building,
• location,
• life,
• topic,
• cavity,
• excavation,
• housing,
• line,
• obstacle,
• fortification,
• hydrocarbon,
• resource,
• object,
• part,
• reservoir,
• container,
• pest,
• band,
• treasure,
• conduit,
• fluid,
• aquifer,
• wealth,
• organ,
• conductor,
• place,
• service,
• relic,
• opening,
• feature,
• equipment,
• storage,
• item,
• plant,
• music,
• void,
• duct,
• activity,
• construction,
• cable,
• system,
• work,
• group,
• development,
• pipe,
• works,
• fixture,
• utility,
• world,
• passage,
• enclosure,
• stem,
• shelter,
• improvement,
• obstruction,