The second one is charging hourly. We tend to prefer hourly fees on projects that are particularly open ended or very small scope. Our hourly rates are currently between $60 and $120 per hour depending on who is doing the work.
The word sonder exists, though. It means to probe, and in a more specific use, to test the depth of something. The word sound (as in the water feature) is a cognate, both related to the Old English sund meaning to swim, or the sea. I can't really think of an English equivalent that's specific beyond mere awareness.
Medical Definition of MESODERM. : the middle of the three primary germ layers of an embryo that is the source especially of bone, muscle, connective tissue, and dermis; broadly: tissue derived from this germ layer. the middle of the three primary germ layers of an embryo that is the source of many bodily tissues and structures (as bone, muscle, connective tissue, and dermis); broadly: tissue derived from this germ layer. â meÂ·soÂ·derÂ·mal \Ëme-zÉ-ËdÉr-mÉl, ËmÄ-, -sÉ-\ adjective. See mesoderm defined for kids. ADVERTISEMENT.