Yesterday I wondered "Why is "get home" used without preposition?" and found the following. According to the answer there are two types of location: relative and (perhaps) absolute. But I couldn't understand why the "home" is relative, since it is a concrete building, flat or place. Likewise i could use "working office" as relative, because it can be a particular place today and another one tomorrow (in case of changing job).
How can I distinguish 'relative' places from other? Or how can I find out that a subject (location) shoud be used without a preposition after verbs "get/go"?
Thanks in advance