Plain

обы́чный

obýčnyj

(ordinary; lacking adornment or ornamentation)

обыкнове́нный

obyknovénnyj

(ordinary; lacking adornment or ornamentation)

обычный

obyčnyj

(computing: containing no non-printing characters)

одноцветный

odnocvetnyj

(of just one colour)

просто́й

prostój

(ordinary; lacking adornment or ornamentation)

простой

prostoj

(computing: containing no non-printing characters)

равни́на

ravnína

(an expanse of land with relatively low relief)