A — 1: πνευματικός
(Strong's #4152 — Adjective — pneumatikos — phyoo-mat-ik-os' )

"always connotes the ideas of invisibility and of power. It does not occur in the Sept. nor in the Gospels; it is in fact an after-Pentecost word. In the NT it is used as follows: (a) the angelic hosts, lower than God but higher in the scale of being than man in his natural state, are 'spiritual hosts,' Ephesians 6:12; (b) things that have their origin with God, and which, therefore, are in harmony with His character, as His law is, are 'spiritual,' Romans 7:14; (c) 'spiritual' is prefixed to the material type in order to indicate that what the type sets forth, not the type itself, is intended, 1—Corinthians 10:3,4; (d) the purposes of God revealed in the gospel by the Holy Spirit, 1—Corinthians 2:13 , and the words in which that revelation is expressed, are 'spiritual,' 1—Corinthians 2:13 , matching, or combining, spiritual things with spiritual words [or, alternatively, 'interpreting spiritual things to spiritual men,' see (e) below]; 'spiritual songs' are songs of which the burden is the things revealed by the Spirit, Ephesians 5:19; Colossians 3:16; 'spiritual wisdom and understanding' is wisdom in, and understanding of, those things, Colossians 1:9; (e) men in Christ who walk so as to please God are 'spiritual,' Galatians 6:1; 1—Corinthians 2:13 [but see (d) above],15; 3:1; 14:37; (f) the whole company of those who believe in Christ is a 'spiritual house,' 1—Peter 2:5; (g) the blessings that accrue to regenerate men at this present time are called 'spiritualities,' Romans 15:27; 1—Corinthians 9:11; 'spiritual blessings,' Ephesians 1:3; 'spiritual gifts,' Romans 1:11; (h) the activities Godward of regenerate men are 'spiritual sacrifices,' 1—Peter 2:5; their appointed activities in the churches are also called 'spiritual gifts,' lit., 'spiritualities,' 1—Corinthians 12:1; 14:1; (i) the resurrection body of the dead in Christ is 'spiritual,' i.e., such as is suited to the heavenly environment, 1—Corinthians 15:44; (j) all that is produced and maintained among men by the operations of the Spirit of God is 'spiritual,' 1—Corinthians 15:46 . ...

Galatians 5:16 Galatians 5:251—Corinthians 3:1-32—Peter 3:18
B — 1: πνευματικῶς
(Strong's #4153 — Adverb — pneumatikos — pnyoo-mat-ik-oce' )

"spiritually," occurs in 1—Corinthians 2:14 , with the meaning as (j) above, and Revelation 11:8 , with the meaning as in (c). Some mss. have it in 1—Corinthians 2:13 .

Romans 8:61—Corinthians 14:12 1—Peter 2:2