In US slang, a flack is a press agent and, as an uncountable noun, also publicity. To flack means ‘to work as a press agent’ or ‘to promote or publicize.’ Unrelatedly, in a military context, flack, also spelled flak, is antiaircraft fire. Related to this, figuratively, flack or flak is strong and harsh criticism, usually a great deal of…
To foster means ‘to promote the growth or development of something’ or ‘to bring up and raise’ children or young that are not your own. When we are talking about a plan, hope, or feeling, it means ‘to care for or cherish.’ As an adjective, foster relates to someone or something that provides or receives parental care despite the absence of relationship by blood…