<svg width="300px" height="100px" viewBox="0 0 300 100">
<text x="20" y="30">Two words
  <tspan style="font-size: 10pt;">(normal length)</tspan>
</text>
<text x="20" y="60"
  textLength=""
  lengthAdjust="
  spacing
  spacingAndGlyphs
  ">
    Two words
</text>
</svg>