Eight verses in the first person. The speaker travels with all the classes of gods and holds up the chief ones; she is Queen and gatherer of treasures; through her everyone eats, sees, breathes and hears without knowing it; she makes the one she loves a seer; she bends Rudra's bow, brings forth the Father, dwells in the waters and extends beyond earth and sky.
Poets speak about Vac. The first seers, naming things, sent out her earliest utterances; they tracked her by sacrifice and found her in the seers; one man sees and hears her not, to another she shows herself as a well-dressed wife to her husband. When Vac, queen of the gods, sat down speaking words not understood, the four quarters milked out food; the gods made her and every animal speaks her. Speech has four parts; three are hidden and people speak the fourth.
What is different here:
Vac seen from outside, as something found, selective and three-quarters hidden; not self-praise.
Sources: Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; Hymns of the Atharva-Veda, tr. R. T. H. Griffith (1895); Vac and Devisukta (Wikipedia)