Chinese words with 凝 character meaning (HSK)

凝固

NING2, GU4
to freeze, to solidify, to congeal, fig. with rapt attention

凝聚

NING2, JU4
to condense, to coagulate, coacervation (i.e. form tiny droplets), aggregation, coherent

凝视

NING2, SHI4
gaze