fixed phrase

smooth (without difficulty)

conversation

to talk with, to have a conversation

to recall, to remember / to learn / to memorize / to feel (an emotion or sense)

fixed pattern

the English language

the mon, an old currency / a unit of length for measuring the size of one's foot (from the way that the mon coins would be lined up and used as a kind of inch marker) / a character, a letter

(grammar) a sentence / writing, composition / a design or pattern as decoration / literature, learning, scholarship / elegance, refinement (especially of writing or wording)

writing, something written / a letter (written communication), an epistle / (archaic) study, scholarship (especially of classical Chinese) / a style of 家紋 (kamon, “family crest”)