I found this interesting so looked it up:

    Janet 1.9.1-4ae3722 Copyright (C) 2017-2019 Calvin Rose
    janet:1:> (array 1 2 3)
    @[1 2 3]
    janet:2:> (tuple 1 2 3)
    (1 2 3)
    janet:3:> (rest (tuple 1 2 3))
    compile error: unknown symbol rest on line 3, column 1 while compiling repl
    janet:5:> (tail (tuple 1 2 3))
    compile error: unknown symbol tail on line 5, column 1 while compiling repl
    janet:6:> (car (tuple 1 2 3))
    compile error: unknown symbol car on line 6, column 1 while compiling repl
    janet:7:> (cdr (tuple 1 2 3))
    compile error: unknown symbol cdr on line 7, column 1 while compiling repl
    janet:8:> (def t (tuple 1 2 3))
    (1 2 3)
    janet:9:> (def a (array 1 2 3))
    @[1 2 3]
    janet:11:> (drop 1 t)
    (2 3)
    janet:12:> (drop 1 a)
    (2 3)
    janet:13:> (first t)
    1
    janet:14:> (first a)
    1