> old/new, head/tail, fast/slow, same/diff, and right/wrong

also some abbreviations work fine:

    min
    max

    row
    col

    beg (vs start)
    end

    key
    val

    src
    dst

    pos
    len

and we have

    public_key
    secret_key (vs private)

    from
    till

    push
    pull

    load
    save

    init
    done

    inner
    outer

-----

and if you speak Norwegian you have two options:

    ja    yes
    no    nei

but that may trigger a different kind of OCD :-)