The word is playground.
playground
Yes it is. Play and ground is a word and it has a meaning
Play playpen playtime playground playmate
under-ground
One compound word with "ground" is "groundwork," which refers to the preliminary work or foundation for something.
backgroundbattlegroundcampgroundfairgroundforegroundplaygroundunderground
Underground.
Yes, "grandchildren" is a compound word formed by combining "grand" and "children" to refer to the offspring of one's children.
Play playpen playtime playground playmate
Yes, "underground" is a compound word, formed by combining the words "under" and "ground."
Counterintelligence is a compound word with secondary stress.
Yes, "playdate" is considered a compound word because it combines two individual words, "play" and "date," to create a new meaning. It refers to a scheduled time for children to play together. Compound words often bring together distinct concepts to form a single idea, as seen in this example.