Modifiers matching hydrocarbon:

• synthetic,
• aromatic,
• main,
• light,
• liquefied,
• model,
• complicated,
• liquid,
• refined,
• liquifiable,
• linear,
• saturated,
• volatile,
• pure,
• vaporizable,
• nitrogenous,
• planar,
• simple,
• dilute,
• available,
• supercritical,
• hydrophobic,
• aliphatic,
• inert,
• bound,
• airborne,
• acyclic,
• basic,
• conjugated,
• gaseous,
• lower,
• desirable,
• unsaturated,
• minor,
• particular,
• important,
• lighter,
• regulated,
• industrial,
• hard,
• dangerous,
• fluid,
• natural,
• single,
• dark,
• familiar,
• frozen,
• soluble,
• cyclic,
• molecular,
• essential,
• flammable,
• commercial,
• useful,
• conventional,
• reactive,
• base,
• stable,
• organic,
• heavy,
• clean,
• valuable,
• carcinogenic,
• polygonal,
• nonpolar,
• typical,
• acetylenic,
• small,
• dissolved,
• cheap,
• alternative,
• neutral,
• greasy,
• floating,
• hazardous,
• ordinary,
• residual,
• viscous,
• solid,
• complex,
• combustible,
• underground,
• individual,
• toxic,
• heavier,
• intermediate,
• common,

Simple categories matching molecular:

• system,
• property,
• imaging,
• precursor,
• contaminant,
• process,
• gas,
• characteristic,
• discipline,
• entity,
• motion,
• material,
• landmark,
• formation,
• weight,
• aldehyde,
• component,
• machinery,
• carbonyl,
• form,
• modification,
• reaction,
• phosphorus,
• trap,
• surface,
• assembly,
• substance,
• compound,
• solution,
• change,
• adduct,
• repair,
• data,
• nutrition,
• macromolecule,
• complex,
• project,
• medicine,
• level,
• hydride,
• movement,
• approach,
• thing,
• activity,
• cloud,
• adaptation,
• architecture,
• composition,
• crystal,
• shape,
• state,
• attribute,
• constant,
• particle,
• research,
• concept,
• aspect,
• aggregate,
• group,
• constituent,
• topology,
• quantity,
• trait,
• skeleton,
• layer,
• interaction,
• variable,
• rest,
• selectivity,
• polymer,
• track,
• factor,
• mechanism,
• liquid,
• concentration,
• ion,
• study,
• parasite,
• atmosphere,
• film,
• alteration,
• therapy,
• fiber,
• unit,
• bioscience,
• container,
• scale,
• event,
• halogen,
• carbohydrate,
• hydrocarbon,
• mixture,
• energy,
• contamination,
• chains,
• cause,
• condition,
• work,
• carbon,
• medium,
• food,
• chain,
• line,
• technology,
• terms,
• displacement,
• signal,
• substrate,
• solute,
• phenomenon,
• space,
• gel,
• barrier,
• evolution,
• feature,
• reorientation,
• size,
• biology,
• solid,
• alcohol,
• solvent,
• geometry,
• laser,
• fragment,
• science,
• analysis,
• information,
• oxygen,
• carrier,
• force,
• investigation,
• behavior,
• device,
• parameter,
• transport,
• response,
• transformation,
• protein,
• structure,
• physics,
• measurement,
• marker,
• fluid,
• function,
• machine,