gap (n.)
- abysm
- abyss
- aperture
- arroyo
- bottom
- bottoms
- breach
- break
- breakage
- burst
- caesura
- canyon
- cavity
- cessation
- chap
- chasm
- check
- chimney
- chink
- chip
- clearing
- cleavage
- cleft
- clove
- col
- crack
- cranny
- crevasse
- crevice
- cut
- cwm
- dale
- defalcation
- defect
- deficiency
- deficit
- defile
- delay
- dell
- difference
- dike
- dingle
- disagreement
- disclosure
- discontinuity
- discrepancy
- disparity
- disruption
- distance
- distinction
- ditch
- divergence
- division
- draw
- excavation
- fault
- fenestra
- fissure
- fistula
- flaw
- flume
- fontanel
- foramen
- fracture
- furrow
- gape
- gash
- gat
- gill
- glen
- gorge
- groove
- grove
- gulch
- gulf
- gully
- halt
- hiatus
- hole
- hollow
- incision
- inconsistency
- inlet
- interim
- intermission
- interruption
- interval
- joint
- lack
- lacuna
- leak
- letup
- lull
- moat
- need
- notch
- nullah
- omission
- open
- opening
- orifice
- outage
- outlet
- pass
- passage
- passageway
- pause
- pore
- ravine
- recess
- rent
- respite
- rest
- rift
- rime
- rip
- rive
- rupture
- scale
- scissure
- seam
- separation
- shortage
- slash
- slice
- slit
- slot
- space
- splinter
- split
- stoma
- stop
- suspension
- tear
- trench
- trough
- ullage
- vale
- valley
- void
- wadi
- wait
- want
- yawn
gap (v.)
- bottom
- breach
- break
- burst
- chap
- check
- chink
- chip
- cleave
- crack
- cut
- defect
- defile
- dehisce
- delay
- dike
- distance
- distinction
- ditch
- draw
- fault
- fissure
- flaw
- fracture
- furrow
- gape
- gash
- gorge
- groove
- gulf
- halt
- hole
- hollow
- incise
- joint
- lack
- leak
- lull
- need
- notch
- open
- pass
- pause
- pore
- recess
- rent
- respite
- rest
- rift
- rime
- rip
- rive
- rupture
- scale
- seam
- slash
- slice
- slit
- slot
- space
- splinter
- split
- stop
- tear
- trench
- void
- wait
- want
- yawn
