Metaphor is a Metaphor. A Leaky Abstraction is a Leaky Abstraction

Bear with me.

Metaphor is a metaphor. A metaphor is a transfer is a carrying over (meta- (GR) = trans- (L) = over, across, -phor (G) = -fer (L) = carry, bear). A metaphor is a transfer of meaning from one literal sense to a figurative one where, hopefully, the transfer to the new domain keeps things one-to-one.

Imperfect metaphors are called leaky abstractions (at least in software). And 'leaky abstraction' is a leaky abstraction. They leak because the literal source of the abstraction leaks through to the abstraction layer. An abstraction or a metaphor is metaphorically used as a container of fluid some of which leaks out (but onto what? which is the source and which is the target (in another metaphor of metaphor)). You can't take the abstraction layer literally, you have to know something about the underlying source.

Also, 'figurative' is figurative or metaphorical; I often take metaphor as a synecdoche (or metonymy; synecdoche is a metonymy of metonymy) of figure of speech, in that it, figure of speech, is not literal. A figure is a picture, which is a good metaphor for metaphors... or figures of speech. 'Literal', on the other hand, happens to be somewhat non-literal because it is about writing, which is a metaphor for verbatim, that is the primary surface definition. 'Literally' has been used non-literally (that is as a general intensifier) literally for ages, but universally (that's hyperbole which is a figure of speech which is just a lie that we all agree to and not metonymy) recognized as wrong.

Borges said (in This Craft of Verse) that Lugones said (in Lunario sentimental) that "all words are dead metaphors", which is a dead metaphor because nothing has really died. Or rather the original meaning died or faded away very slowly, but you could resurrect it a little if you tried. So it's a little leaky.

We're swimming in metaphors!

Also 'Metaphors We Live By', by Lakoff and Johnson