Just a few lines...

Sightlines, nightlines,
beelines, treelines,
tidelines, guidelines,
lines of verse, lines of enquiry, lines of communication,
lines of least resistance.
Worry lines, laughter lines, battle lines, bloodlines,
fishing lines, washing lines, sky lines, songlines.
Nazca lines.
Marriage lines.
Lines Written in a Country Churchyard, On Westminster Bridge, Among the Euganean Hills.
Breadlines, deadlines, intravenous lines,
lines of attack and defence,
lifelines.

(Mono Monday: lines)