Front lines
Line and front lines are semantically related. In some cases you can use "Line" instead a noun phrase "Front lines".
Line
Line noun - A series of persons or things arranged one behind another.
Front lines and line are semantically related. Sometimes you can replace phrase "Front lines" with "Line", this terms are similar.
Both terms in one sentence
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Similarly, several turian generals (Corinthus and next-in-line-to-be-Primarch Victus) are in the thick of the fighting on the front lines of Menae.
Source: Frontline General -
Also, the children are rarely used as front-line soldiers, instead they are used primarily for supply and logistics work in order to free up adults to fight in the front lines.
Source: Child Soldiers -
He browbeats Colonel Henry into accepting the logic that as the 4077 M*A*S*H* is officially a front-line military hospital which shares front-line perils like occasional shelling and sniping, his "wound" was sustained in the front lines, and therefore merits a Purple Heart.
Source: Series / M*A*S*H
Cite this Source
Line and Front lines. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/front_lines/line
Front lines & Line. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/front_lines/line>.
Line or Front lines. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/front_lines/line.
Google Ngram Viewer shows how "front lines" and "line" have occurred on timeline