A pneumatological conversion? The Holy Spirit’s activities according to Lumen gentium

Lumen gentium and Mystici corporis describe the ecclesiological activity of the Holy Spirit rather differently. Whereas the former tends to specific language, e.g. by using verbs, the latter tends to unspecific language, e.g. by using nouns. Thus the former typically states that the Spirit brings unity, the latter that the Spirit is principle of unity. This points to a significant difference in pneumatological conception that however depends heavily on ecclesiological and christological changes as well