Modifiers matching kingdom:

• bacterial,
• eukaryotic,
• united,
• organic,

Simple categories matching eukaryotic:

• microorganism,
• organism,
• group,
• taxon,
• phytoplankton,
• genus,
• species,
• host,
• event,
• virus,
• organs,
• relative,
• microbe,
• system,
• cell,
• heterotroph,
• material,
• genome,
• flagellum,
• plastid,
• pathogen,
• process,
• feature,
• source,
• protist,
• organelle,
• origin,
• elements,
• agent,
• parasite,
• algae,
• kingdom,
• tissue,