Her speeches must be brief (short, concise).
Brevity is a noun that means concise, to the point and shortness of time. It comes from the Latin root "brevis", which is also the root of the word brief, the adjective correspondent to the noun brevity, which also means a concise summary or statement or (something) of a short duration. So concluding, if a speaker is known for her brevity then her speeches must be brief, that is, short or concise.
Content Analysis
Content analysis is an investigation method for analyzing reports and interpreting artifacts, which might be documents of different compositions, images, video or audio. Social scientists practice this content inquiry to analyze patterns in communication in a applicable and precise way. One of the chief benefits of using content analysis to investigate social aspects is its non-invasive character, in contrast to assuming social happenings or assembling questionnaire answers.
