is similar to
purely outward or superficial
"external composure"; "an external concern for reputation"- A.R.Gurney,Jr.
is similar to
located outside
"outer reality"
see also
concerned with or comprehending only what is apparent or obvious; not deep or penetrating emotionally or intellectually
"superficial similarities"; "a superficial mind"; "his thinking was superficial and fuzzy"; "superficial knowledge"; "the superficial report didn't give the true picture"; "only superficial differences"
is an attribute of
a concern with or responsiveness to outward things (especially material objects as opposed to ideal concepts)
"hearty showmanship and all-round outwardness"