"the concentrate of contemporary despair"
"concentrate juice"
"Please focus on your studies and not on your hobbies"
"The Russian government centralized the distribution of food"
"condense the contents of a book into a summary"
"These groups concentrate in the inner cities"
"Congress condensed the three-year plan into a six-month plan"
"The sauce should reduce to one cup"
"The cook reduced the sauce by boiling it for a long time"