How to use the word 'fade away' in a sentence?

word usage examples

I want to use the word fade away to say something is slowly disappear, become weaker or lose importance, but I and not sure whether I use the word 'fade away' correctly.

Examples:
As time passes, our memories are fading away.

It seems to me that when we want to if we want to describe something is abstract, the word of 'fade away' is appropriate, for example, memories, voice etc.

However, when it comes to something that is concrete such as shops, people, we can't say they are fading away.

I am curious whether my understandings are correct.

Thank you very much!

The word "fade" lends itself to present form usage. That means you can say:

Our memories fade away
His memory is fading
Colors fade in due time
Her voice faded out as she spoke

"Fade" and all its variations are better used in a continuing action presentation. However, you can still use the word fade to describe abstract situations and objects in past tense:

He faded into oblivion
The flowers faded into the background
The building signage is faded

The word, in past tense represents the completion of a disappearance since fade, by definition, refers to several instances:
- to lose brightness or vividness of color.
- to lose freshness, vigor, strength, or health:

The above dictionary definitions are but a few ways of using the word "fade" and its variations in a sentence. The way the word is used will actually depend upon the context the writer wishes to represent.

@Holt
Got it! Thank you so much :))