Crossword puzzle clue "four letter word perhaps"

Four-letter word, perhaps

Angle irons graphically represented by four sets of black squares in this grid, and by letter formations starting in the four longest answers

Joins forces, or the hidden four-letter words in four Down answers

Collection consisting of four plates, four saucers, four bowls, etc.

Replete with four-letter words, perhaps

Words between a letter and a word starting with that letter

Word form made with the big letter depicted in this puzzle's diagram (this letter is entirely absent from the solution)

"Love Is Just a Four-Letter Word" singer