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# [APL (Dyalog Extended)], 18 bytes

<!-- language-all: lang-apl -->

Anonymous tacit prefix function taking a list of two strings as argument.

    2=1⊥(≠⌿∊≢⍤⊢⌸⍤,⍤1↑)

[Try it online!][TIO-klr9s1xj]

`(`…`)` apply the following tacit function to the argument:

&emsp;`↑` mix the list of strings into a 2-row character matrix (padding any short string with spaces as necessary)

&emsp;`∊`…`⍤1` with the **e**nlisted (flattened into a single string) argument as left argument, apply the following function to each row of the matrix:

&emsp; `⍤,` concatenate the enlisted string to the row string, then:

&emsp;  `≢⍤⊢⌸` count the number of occurrences of each unique element, in their order of appearance

&emsp;`≠⌿` Boolean mask indicating where the rows differ

`1⊥` sum (lit. evaluate as unary; i.e. count differences)

`2=` is 2 equal to that?



[APL (Dyalog Extended)]: https://github.com/abrudz/dyalog-apl-extended
[TIO-klr9s1xj]: https://tio.run/##SyzI0U2pTMzJT9dNrShJzUtJTfn/38jW8FHXUo1HnQse9ex/1NH1qHPRo94lj7oWPerZAWToALHho7aJmv/THrVNeNTb96ir@VHvmke9Ww6tNwaKP@qbGhzkDCRDPDyD/6cpqDu6@Du5qgNpJ38XV3UuoEhIaIAPSCQk1MczACzi6OTsAhJxcXRxcgaLODkGqSsogGk/mICfOkQgyNUPqgukBKwbne@iDgA "APL (Dyalog Extended) – Try It Online"