Answers are all 5 letter words which can either preced or follow each of the 3 words
7 Grand Stool Trio
10 Root Boat Ray
12 Bulb Meter First
17 Point Station Flower
23 Stocking Saw House
26 Down Up On
43 Air Line Ground
38 Patrol Siren Loan
40 Telegraph Louse House
41 Armour Selling Glass