Modifiers matching certificate:

• key,
• religious,
• physical,
• professional,
• special,
• relevant,
• specialized,
• digital,
• official,
• recent,
• public,
• internal,
• individual,
• valid,
• legal,
• electronic,
• technical,
• secure,

Simple categories matching digital:

• content,
• machine,
• model,
• medium,
• certificate,
• graphics,
• object,
• game,
• business,
• system,
• bus,
• equipment,
• credential,
• study,
• convergence,
• offering,
• circuit,
• cable,
• document,
• timepiece,
• information,
• asset,
• package,
• practice,
• item,
• tv,
• layer,
• packet,
• creation,
• thing,
• space,
• light,
• application,
• device,
• part,
• indicator,
• advertisement,
• frequency,
• marketing,
• devices,
• circuitry,
• number,
• signal,
• database,
• pda,
• processing,
• structure,
• expression,
• meter,
• terminal,
• connection,
• broadcast,
• form,
• projector,
• means,
• broadcasting,
• platform,
• representation,
• communication,
• library,
• service,
• component,
• environment,
• production,
• recorder,
• photography,
• watermark,
• token,
• product,
• waveform,
• converter,
• pattern,
• radio,
• elements,
• storage,
• source,
• notation,
• memory,
• input,
• material,
• decoration,
• module,
• text,
• evidence,
• output,
• being,
• development,
• culture,
• experience,
• attribute,
• set,
• format,
• paper,
• picture,
• use,
• display,
• block,
• expert,
• animation,
• facility,
• peripheral,
• sign,
• technology,
• simulation,
• voltmeter,
• art,
• preservation,
• enhancement,
• map,
• printer,
• photograph,
• show,
• market,
• activity,
• print,
• semiconductor,
• computer,
• assistant,
• printing,
• interface,
• instrument,
• scale,
• apparatus,
• life,
• recording,
• stuff,
• cell,
• image,
• watch,
• works,
• surface,
• language,
• entertainment,
• hardware,
• process,
• gadget,
• identity,
• unit,
• work,
• quantity,
• imaging,
• appliance,
• entity,
• tape,
• property,
• publication,
• artifact,
• camera,
• clue,
• artefact,
• subculture,
• collection,
• program,
• data,
• screen,
• artwork,
• communications,
• marketplace,
• record,
• secret,
• tuner,
• network,
• feature,
• file,
• audio,
• keyboard,
• store,
• magazine,
• advertising,
• filter,
• point,
• line,
• element,
• control,
• controller,
• measure,
• photo,
• transmission,
• instrumentation,
• sensor,
• resource,
• tool,
• code,
• video,
• assets,