ADJ
                            
                            
                                - common
 
- northern, southern, etc.
 
- national, state
 
- district, parish
 
                             
                         
                                                
                            
                                
VERB + BOUNDARY
                            
                            
                                - have
 
- form, mark
 - The river forms the boundary
 
- share
 
- draw, establish, fix, set
 - The boundary was fixed just south of the farm
 
- redraw
 
- cross
 - We've just crossed the boundary into Sussex
 
- extend
 
                             
                         
                                                
                            
                                
BOUNDARY + NOUN
                            
                            
                                - fence, hedge, line, wall
 
- dispute
 - a boundary dispute with their neighbours
 
                             
                         
                                                
                            
                                
PREP
                            
                            
                                - across/over the ~
 - They drove across the boundary
 
- along the ~
 - We continued along the southern boundary of the county
 
- at/on the ~
 - We had to stop at the boundary. on the boundary of the two countries
 
- beyond the ~
 - She had never strayed beyond the city boundaries
 
- within the ~s
 - within the boundaries of the old city walls
 
- ~ between
 - the boundary between Sussex and Surrey
 
- ~ with
 - The state has a boundary with Ontario
 
                             
                         
                                         
             
         
                
            
            
                
                                            
                                                
                            
                                
VERB + BOUNDARY
                            
                            
                                - cross
 - This job crosses the traditional boundary between social work and health care
 
- extend, push back
 - research which extends the boundaries of human knowledge
 
- overstep
 
                             
                         
                                                
                            
                                
PREP
                            
                            
                                - across ~s
 - His policies appeal across party political boundaries
 
- beyond the ~s
 - going beyond the boundaries of accepted behaviour
 
- on the ~
 - on the boundary of physics and chemistry
 
- within the ~s
 - keeping within the boundaries of the law
 
- ~ between
 - the boundary between sanity and insanity
 
                             
                         
                                                
                            
                                
PHRASES
                            
                            
                                - the boundaries of taste
 - In her performance she had clearly overstepped the boundaries of good taste