Welcome to OSM! How could the residents leave the street?

Hello! Please have a look on way/1272634301. What is the mean of the tag 2023-12-29 = 2024-10-31?

Welcome to OSM! Please have a look on node/12855139493. What ist the mean of the tag gedung = Fakultas Geografi UGM?

Hello! Please have a look on way/751239168. What is the mean of the tag Kotulo - Leheley Road = Borji garas-Kutulo Road?

Hallo! Bitte schau Dir mal den Knoten node/12855429637. Meinst Du bei dem Tag lef=6 den Schlüssel ref oder irgendetwas mit left?

Hello! Please have a look on https://osm/way/1388890713. What is the mean of the tags
CANTON = Redange
COMMUNE = Beckerich
DISTRICT = Diekirch
LAU2 = 0701
(no other OSM keys)?

Welcome to OSM! Please add an address to a building, not on the end of a highway!

Hello! Please check the value of gns:id = -2703454 (id with negativ value?).

Welcome to OSM! You add a node with leisure=park inside of a private area. You add also a tag wifi=Helium. What is the mean of this. A correct notation would be internet_access=wlan (see osm.wiki/Key%3Ainternet_access)
But only add existing objects and not objects that are funny to you!

Hello! Please use name:ja-Latn instead of name:ja_Latn.

Welcome to OSM! What is the mean of the tag army = 空军第19师第56团?

Hello! Please have a look on way/1387868402 (one of ten objects). What ist the mean of the tags
BldgTypeDe = SINGLE FAMILY 2 STORY
Subdivisio = WILSON GREEN
(no other OSM tags)

Hallo! Bitte schau Di die Objekte unter https://overpass-turbo.eu/s/24oz an. Welche Bedeutung haben das Tag _nvbw_temp_object = yes ?

Welcome to OSM! I revert your changes set, because all nodes are moved more than 100 Meters

Welcome to OSM! Please don't add standard name to an object (like)
landuse = farmyard
name = Farmyard

Of course the key is not wrong, but you can see that there is only a short prefix before the ref. These are also in lower case. For quicker recognition of what the key can mean, the suggested variant under Extensions ref=*#Extensions makes more sense (if necessary also country code)

Welcome to OSM! You move a the node node/3125170383 more than 100 meters. I revert your change set.

Welcome to OSM! You add three nodes with leisure=park inside of buildings! See
node/12846826240, node/8447205741, node/8098738751
Please make sure that the changes are correct and not fun changes.

Welcome to OSM! Please be careful! You move the node node/6817325093 more than 100 meter. Ich move the node back to the original position.

Hallo! Bitte sieh Dir nochmal den Knoten node/6006875292 an. Was bedeutet das Tag Wanderkarte = Klumpertal? Und dies bei einer Bank?