Englishfor English speakers
smooth
Adjective
—
Smooth feels pleasant and flat when you touch it; not rough.
He felt the smooth skin on her cheek.
—
A smooth liquid would have no lumps in it.
He mixed the flour and water until it was smooth.
lichen
—
noun
any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc
—
noun
any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks