ASCII(/CodePage 437-inspired graphics) is basically mnemonic for most of the basic (and some accented) letters and nodding-towards symbolic for most of the rest. Some frighteningly so, like the Æ (in the codepage font) looks very coffer-like and levers are visibly òff or ón. What better symbol for a lobster than ¥?
And I think a ╤ Table and a ╥ chair (ok, maybe more a stool?) are the right way round, given their respective top-surface heights.
If you choose a 'graphical' graphics pack, you still have to learn to recognise the group of pixels. They might be slightly better in symbolic terms, but creature-art is limited to resolution, for a start. While geese and goblins might indeed be confusing, depending upon the colour of the g used for that individual's purpose or age, different artists use different methods for differentiating the various quadrupeds, bipeds or indeed pinnipeds. And then you might call foul over their depictions of fowl, or might not, depending on source and what respective utility you might put chickens and turkeys to, etc.
Maybe it doesn't matter, as you're probably going to interrogate every unknown item you come across in your games, and will be confused or at least unsure about every screenshot published that does not use a familiar variation. Though nature isn't so hard to understand that you need to choose one of a pantheon of false gods to worship. Religion often makes people feel better about the world, but don't find yourself trapped in a faith that others chose for you. Look around for which one best augments your understanding of the world once you have a firm understanding of the basics.
(I'd go for something syncretic, personally, if I felt the need. One of the augmented-437s that round out the vanilla with some added visual flair. Though I've seen some that go all the way to turning it into 8-bit-video-console-alike, which is marvellous if you like that kind of thing.)