Verb

(concentrat)

(ambitransitive) To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force.

to concentrate rays of light into a focus

to concentrate the attention

Let me concentrate !

To increase the strength and diminish the bulk of, as of a liquid or an ore; to intensify, by getting rid of useless material; to condense (qualifier, as opposed to 'dilute').

to concentrate acid by evaporation

to concentrate by washing

To approach or meet in a common center; to consolidate.

Population tends to concentrate in cities.

* {{quote-book, year=2006, author=

, title=Internal Combustion , chapter=2 citation , passage=Buried within the Mediterranean littoral are some seventy to ninety million tons of slag from ancient smelting, about a third of it concentrated in Iberia. This ceaseless industrial fueling caused the deforestation of an estimated fifty to seventy million acres of woodlands.}}

To focus one's thought or attention (on).

Verb

(separat)

To divide (a thing) into separate parts.

To disunite something from one thing; To disconnect.

* Dryden

From the fine gold I separate the alloy.

* Bible, Romans viii. 35

Who shall separate us from the love of Christ?

To cause (things or people) to be separate.

* {{quote-magazine, date=2013-06-07, author=David Simpson

, volume=188, issue=26, page=36, magazine=(The Guardian Weekly) , title= Fantasy of navigation , passage=It is tempting to speculate about the incentives or compulsions that might explain why anyone would take to the skies in [the] basket [of a balloon]: […];  […]; or perhaps to muse on the irrelevance of the borders that separate nation states and keep people from understanding their shared environment.}}

To divide itself into separate pieces or substances.

(obsolete) To set apart; to select from among others, as for a special use or service.

* Bible, Acts xiii. 2

Separate me Barnabas and Saul for the work whereunto I have called them.