Compare: 凝る vs 凝る

凝るこる

to become stiff (of muscles)

凝るこごる

to congeal; to gelatinize; to jellify; to jell; to gell; to freeze

N5CommonGodan verb (ru ending)

to become stiff (of muscles)

彼女は服(ふく)に凝(こる)っている。

She is particular about her dress.

彼(かれ)は野球に凝(こる)っている。

He has got baseball on the brain.

こごる凝る

N3Godan verb (ru ending)

to congeal; to gelatinize; to jellify; to jell; to gell; to freeze