Enter criteria and click Find Words
Only four words put A first and V third, and just one of them is in common use. ANVIL is the page.
Four entries sounds like something to work with. In practice ANVIL is the only word here most people know, and AIVER, ARVAL and ARVOS are dictionary entries rather than vocabulary.
R takes the second box in two of the four, the only letter appearing more than once. I and N take one each, which means ANVIL is alone in its branch and so is AIVER.
With four words every share is a large fraction by definition. Saying R covers half the second box sounds meaningful until you notice it covers two words.
The same goes for the endings. L closes two of them, the highest count on the page, and it still tells you almost nothing.
Nothing here repeats a letter, so a visible double rules the pattern out in one step.
Play ANVIL. If it is wrong, read the other three entries and pick whichever fits the boxes you have.
On this pattern it usually is. The alternatives are a farm horse, a term tied to funeral feasts and an informal plural for afternoons, none of which comes to mind under pressure.
An informal word for the afternoon. ARVOS is its plural and it is one of the two words here with R in the second box.
A in the first box is common but V in the third is not. Very few English words put a V there at all, and at five letters you are left with four.