"marker" - key terms from Wikipedia

active marker
aspect marker
each marker
elda marker
first marker
genetic marker
grave marker
henry marker
highway marker
historical marker
inner marker
little miss marker
little myth marker
marker
marker	and vig
marker	assisted selection
marker	back
marker	beacons
marker	body
marker	buoy
marker	characters
marker	dye
marker	family
marker	flags
marker	lights
marker	loci
marker	or stylus
marker	pen
marker	system
middle marker
mile marker
order marker
outer marker
paintball marker
permanent marker
plural marker
postpositional marker	for possessive case
presence of snp marker
presence of the marker
quotation marker
raised pavement marker
route marker
serum marker
side marker
side marker	lights
subject marker
temporary marker	buoy
topic marker
tumor marker
vowel marker