There are many terms for Lawn sprinklers they are all basically for the same thing. For instance, garden sprinklers, lawn irrigation systems, in ground sprinkler systems, lawn irrigation, water sprinklers. They are the same, just a little different wording.
Watering systems can be used for lawns, patio pots, gardens, flower beds, window pots, island, etc. There are different heads and systems used also like sprays, rotors, bubblers, drip.
This is simplifying things a bit, but it gives you an idea how confusing it can be for those trying to describe to me what they have or want.
It can be hard for the customer sometimes getting their message to me about replacing sprinkler heads, repairing their irrigation system, using Toro heads or Hunter heads which ones are better and so on.
I have been servicing and repair your lawn watering systems for over 30 years I can figure it out no matter how you describe your problem or what you want.
So bring it on I am Your Sprinkler Man, Keith Wiseman