The picture is incorrect the shovel is the square one. A spade is the leaved one. Or so my dad, grandad, grandma, uncles and aunts continually corrected me...
that’s how I was raised the spade had the curved bottom to spade the ground and the flat bottom was called the cow sh!t shovel to scrape up the manure when milking
Yeah. I know. That's my point. I drives me nuts. If you Google it you will be told the opposite